Question 1:What is your only comfort in life and in death?
Answer 1:That I am not my own , but belong – body and soul, in life and in death  – to my faithful Savior, Jesus Christ.  He has fully paid for all my sins with His precious blood , and has set me free from the tyranny of the devil.  He also watches over me in such a way  that not a hair can fall from my head without the will of my Father in heaven ; in fact, all things must work together for my salvation.  Because I belong to Him, Christ, by His Holy Spirit, assures me of eternal life  and makes me wholeheartedly willing and ready from now on to live for Him. 
Supporting Scripture:  1 Corinthians 6:19-20 NKJV Or do you not know that your body is the temple of the Holy Spirit who is in you, whom you have from God, and you are not your own? (20) For you were bought at a price; therefore glorify God in your body and in your spirit, which are God's.
 Romans 14:7-9 NKJV For none of us lives to himself, and no one dies to himself. (8) For if we live, we live to the Lord; and if we die, we die to the Lord. Therefore, whether we live or die, we are the Lord's. (9) For to this end Christ died and rose and lived again, that He might be Lord of both the dead and the living.
 1 Corinthians 3:23 NKJV And you are Christ's, and Christ is God's.
Titus 2:14 NKJV who gave Himself for us, that He might redeem us from every lawless deed and purify for Himself His own special people, zealous for good works.
 1 Peter 1:18-19 NKJV knowing that you were not redeemed with corruptible things, like silver or gold, from your aimless conduct received by tradition from your fathers, (19) but with the precious blood of Christ, as of a lamb without blemish and without spot.
1 John 1:7-9 NKJV But if we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin. (8) If we say that we have no sin, we deceive ourselves, and the truth is not in us. (9) If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.
1 John 2:2 NKJV And He Himself is the propitiation for our sins, and not for ours only but also for the whole world.
 John 8:34-36 NKJV Jesus answered them, "Most assuredly, I say to you, whoever commits sin is a slave of sin. (35) And a slave does not abide in the house forever, but a son abides forever. (36) Therefore if the Son makes you free, you shall be free indeed.
Hebrews 2:14-15 NKJV Inasmuch then as the children have partaken of flesh and blood, He Himself likewise shared in the same, that through death He might destroy him who had the power of death, that is, the devil, (15) and release those who through fear of death were all their lifetime subject to bondage.
1 John 3:1-11 NKJV Behold what manner of love the Father has bestowed on us, that we should be called children of God! Therefore the world does not know us, because it did not know Him. (2) Beloved, now we are children of God; and it has not yet been revealed what we shall be, but we know that when He is revealed, we shall be like Him, for we shall see Him as He is. (3) And everyone who has this hope in Him purifies himself, just as He is pure. (4) Whoever commits sin also commits lawlessness, and sin is lawlessness. (5) And you know that He was manifested to take away our sins, and in Him there is no sin. (6) Whoever abides in Him does not sin. Whoever sins has neither seen Him nor known Him. (7) Little children, let no one deceive you. He who practices righteousness is righteous, just as He is righteous. (8) He who sins is of the devil, for the devil has sinned from the beginning. For this purpose the Son of God was manifested, that He might destroy the works of the devil. (9) Whoever has been born of God does not sin, for His seed remains in him; and he cannot sin, because he has been born of God. (10) In this the children of God and the children of the devil are manifest: Whoever does not practice righteousness is not of God, nor is he who does not love his brother. (11) For this is the message that you heard from the beginning, that we should love one another,
 John 6:39-40 NKJV This is the will of the Father who sent Me, that of all He has given Me I should lose nothing, but should raise it up at the last day. (40) And this is the will of Him who sent Me, that everyone who sees the Son and believes in Him may have everlasting life; and I will raise him up at the last day."
John 10:27-30 NKJV My sheep hear My voice, and I know them, and they follow Me. (28) And I give them eternal life, and they shall never perish; neither shall anyone snatch them out of My hand. (29) My Father, who has given them to Me, is greater than all; and no one is able to snatch them out of My Father's hand. (30) I and My Father are one."
2 Thessalonians 3:3 NKJV But the Lord is faithful, who will establish you and guard you from the evil one.
1 Peter 1:5 NKJV who are kept by the power of God through faith for salvation ready to be revealed in the last time.
 Matthew 10:29-31 NKJV Are not two sparrows sold for a copper coin? And not one of them falls to the ground apart from your Father's will. (30) But the very hairs of your head are all numbered. (31) Do not fear therefore; you are of more value than many sparrows.
Luke 21:16-18 NKJV You will be betrayed even by parents and brothers, relatives and friends; and they will put some of you to death. (17) And you will be hated by all for My name's sake. (18) But not a hair of your head shall be lost.
 Romans 8:28 NKJV And we know that all things work together for good to those who love God, to those who are the called according to His purpose.
 Romans 8:15-16 NKJV For you did not receive the spirit of bondage again to fear, but you received the Spirit of adoption by whom we cry out, "Abba, Father." (16) The Spirit Himself bears witness with our spirit that we are children of God,
2 Corinthians 1:21-22 NKJV Now He who establishes us with you in Christ and has anointed us is God, (22) who also has sealed us and given us the Spirit in our hearts as a guarantee.
2 Corinthians 5:5 NKJV Now He who has prepared us for this very thing is God, who also has given us the Spirit as a guarantee.
Ephesians 1:13-14 NKJV In Him you also trusted, after you heard the word of truth, the gospel of your salvation; in whom also, having believed, you were sealed with the Holy Spirit of promise, (14) who is the guarantee of our inheritance until the redemption of the purchased possession, to the praise of His glory.
 Romans 8:1-17 NKJV There is therefore now no condemnation to those who are in Christ Jesus, who do not walk according to the flesh, but according to the Spirit. (2) For the law of the Spirit of life in Christ Jesus has made me free from the law of sin and death. (3) For what the law could not do in that it was weak through the flesh, God did by sending His own Son in the likeness of sinful flesh, on account of sin: He condemned sin in the flesh, (4) that the righteous requirement of the law might be fulfilled in us who do not walk according to the flesh but according to the Spirit. (5) For those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit, the things of the Spirit. (6) For to be carnally minded is death, but to be spiritually minded is life and peace. (7) Because the carnal mind is enmity against God; for it is not subject to the law of God, nor indeed can be. (8) So then, those who are in the flesh cannot please God. (9) But you are not in the flesh but in the Spirit, if indeed the Spirit of God dwells in you. Now if anyone does not have the Spirit of Christ, he is not His. (10) And if Christ is in you, the body is dead because of sin, but the Spirit is life because of righteousness. (11) But if the Spirit of Him who raised Jesus from the dead dwells in you, He who raised Christ from the dead will also give life to your mortal bodies through His Spirit who dwells in you. (12) Therefore, brethren, we are debtors—not to the flesh, to live according to the flesh. (13) For if you live according to the flesh you will die; but if by the Spirit you put to death the deeds of the body, you will live. (14) For as many as are led by the Spirit of God, these are sons of God. (15) For you did not receive the spirit of bondage again to fear, but you received the Spirit of adoption by whom we cry out, "Abba, Father." (16) The Spirit Himself bears witness with our spirit that we are children of God, (17) and if children, then heirs—heirs of God and joint heirs with Christ, if indeed we suffer with Him, that we may also be glorified together.
Question 2:What must you know to live and die in the joy of this comfort?
Answer 2:Three things: first, how great my sin and misery are ; second, how I am set free from all my sins and misery ; third, how I am to thank God for such deliverance. 
 Romans 3:9-10 NKJV What then? Are we better than they? Not at all. For we have previously charged both Jews and Greeks that they are all under sin. (10) As it is written: "There is none righteous, no, not one;
1 John 1:10 NKJV If we say that we have not sinned, we make Him a liar, and His word is not in us.
 John 17:3 NKJV And this is eternal life, that they may know You, the only true God, and Jesus Christ whom You have sent.
Acts 4:12 NKJV Nor is there salvation in any other, for there is no other name under heaven given among men by which we must be saved."
Acts 10:43 NKJV To Him all the prophets witness that, through His name, whoever believes in Him will receive remission of sins."
 Matthew 5:16 NKJV Let your light so shine before men, that they may see your good works and glorify your Father in heaven.
Romans 6:13 NKJV And do not present your members as instruments of unrighteousness to sin, but present yourselves to God as being alive from the dead, and your members as instruments of righteousness to God.
Ephesians 5:8-10 NKJV For you were once darkness, but now you are light in the Lord. Walk as children of light (9) (for the fruit of the Spirit is in all goodness, righteousness, and truth), (10) finding out what is acceptable to the Lord.
2 Timothy 2:15 NKJV Be diligent to present yourself approved to God, a worker who does not need to be ashamed, rightly dividing the word of truth.
1 Peter 2:9-10 NKJV But you are a chosen generation, a royal priesthood, a holy nation, His own special people, that you may proclaim the praises of Him who called you out of darkness into His marvelous light; (10) who once were not a people but are now the people of God, who had not obtained mercy but now have obtained mercy.