The Heidelberg Catechism Part II: Deliverance God the Son, Part 9 Lord’s Day 19
Question 50: Why the next words: “and is seated at the right hand of God”?
Answer 50: Because Christ ascended to heaven to show there that he is head of his church,  the one through whom the Father rules all things. 
 Ephesians 1:20-23 NKJV which He worked in Christ when He raised Him from the dead and seated Him at His right hand in the heavenly places, (21) far above all principality and power and might and dominion, and every name that is named, not only in this age but also in that which is to come. (22) And He put all things under His feet, and gave Him to be head over all things to the church, (23) which is His body, the fullness of Him who fills all in all.
Colossians 1:18 NKJV And He is the head of the body, the church, who is the beginning, the firstborn from the dead, that in all things He may have the preeminence.
(2) Matthew 28:18 NKJV And Jesus came and spoke to them, saying, "All authority has been given to Me in heaven and on earth.
John 5:22-23 NKJV For the Father judges no one, but has committed all judgment to the Son, (23) that all should honor the Son just as they honor the Father. He who does not honor the Son does not honor the Father who sent Him.
Q 51: How does this glory of Christ our head benefit us?
A 51: First, through His Holy Spirit He pours out gifts from heaven upon us his members.  Second, by His power He defends us and keeps us safe from all enemies. 
 Acts 2:33 NKJV Therefore being exalted to the right hand of God, and having received from the Father the promise of the Holy Spirit, He poured out this which you now see and hear.
Ephesians 4:7-12 NKJV But to each one of us grace was given according to the measure of Christ's gift. (8) Therefore He says: "When He ascended on high, He led captivity captive, and gave gifts to men." (9) (Now this, "He ascended" – what does it mean but that He also first descended into the lower parts of the earth? (10) He who descended is also the One who ascended far above all the heavens, that He might fill all things.) (11) And He Himself gave some to be apostles, some prophets, some evangelists, and some pastors and teachers, (12) for the equipping of the saints for the work of ministry, for the edifying of the body of Christ,
 Psalms 110:1-2 NKJV The LORD said to my Lord,"Sit at My right hand, Till I make Your enemies Your footstool." (2) The LORD shall send the rod of Your strength out of Zion. Rule in the midst of Your enemies!
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."
Revelation 19:11-16 NKJV Now I saw heaven opened, and behold, a white horse. And He who sat on him was called Faithful and True, and in righteousness He judges and makes war. (12) His eyes were like a flame of fire, and on His head were many crowns. He had a name written that no one knew except Himself. (13) He was clothed with a robe dipped in blood, and His name is called The Word of God. (14) And the armies in heaven, clothed in fine linen, white and clean, followed Him on white horses. (15) Now out of His mouth goes a sharp sword, that with it He should strike the nations. And He Himself will rule them with a rod of iron. He Himself treads the winepress of the fierceness and wrath of Almighty God. (16) And He has on His robe and on His thigh a name written: KING OF KINGS AND LORD OF LORDS.
Q 52: How does Christ’s return “to judge the living and the dead” comfort you?
A 52: In all distress and persecution, with uplifted head, I confidently await the very Judge who has already offered Himself to the judgment of God in my place and removed the whole curse from me.  Christ will cast all His enemies and mine into everlasting condemnation, but will take me and all His chosen ones to Himself into the joy and glory of heaven. 
 Luke 21:28 NKJV Now when these things begin to happen, look up and lift up your heads, because your redemption draws near."
Romans 8:22-25 NKJV For we know that the whole creation groans and labors with birth pangs together until now. (23) Not only that, but we also who have the firstfruits of the Spirit, even we ourselves groan within ourselves, eagerly waiting for the adoption, the redemption of our body. (24) For we were saved in this hope, but hope that is seen is not hope; for why does one still hope for what he sees? (25) But if we hope for what we do not see, we eagerly wait for it with perseverance.
Philippians 3:20-21 NKJV For our citizenship is in heaven, from which we also eagerly wait for the Savior, the Lord Jesus Christ, (21) who will transform our lowly body that it may be conformed to His glorious body, according to the working by which He is able even to subdue all things to Himself.
Titus 2:13-14 NKJV looking for the blessed hope and glorious appearing of our great God and Savior Jesus Christ, (14) 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.
 Matthew 25:31-46 NKJV "When the Son of Man comes in His glory, and all the holy angels with Him, then He will sit on the throne of His glory. (32) All the nations will be gathered before Him, and He will separate them one from another, as a shepherd divides his sheep from the goats. (33) And He will set the sheep on His right hand, but the goats on the left. (34) Then the King will say to those on His right hand, 'Come, you blessed of My Father, inherit the kingdom prepared for you from the foundation of the world: (35) for I was hungry and you gave Me food; I was thirsty and you gave Me drink; I was a stranger and you took Me in; (36) I was naked and you clothed Me; I was sick and you visited Me; I was in prison and you came to Me.' (37) "Then the righteous will answer Him, saying, 'Lord, when did we see You hungry and feed You, or thirsty and give You drink? (38) When did we see You a stranger and take You in, or naked and clothe You? (39) Or when did we see You sick, or in prison, and come to You?' (40) And the King will answer and say to them, 'Assuredly, I say to you, inasmuch as you did it to one of the least of these My brethren, you did it to Me.' (41) "Then He will also say to those on the left hand, 'Depart from Me, you cursed, into the everlasting fire prepared for the devil and his angels: (42) for I was hungry and you gave Me no food; I was thirsty and you gave Me no drink; (43) I was a stranger and you did not take Me in, naked and you did not clothe Me, sick and in prison and you did not visit Me.' (44) "Then they also will answer Him, saying, 'Lord, when did we see You hungry or thirsty or a stranger or naked or sick or in prison, and did not minister to You?' (45) Then He will answer them, saying, 'Assuredly, I say to you, inasmuch as you did not do it to one of the least of these, you did not do it to Me.' (46) And these will go away into everlasting punishment, but the righteous into eternal life."
2 Thessalonians 1:6-10 NKJV since it is a righteous thing with God to repay with tribulation those who trouble you, (7) and to give you who are troubled rest with us when the Lord Jesus is revealed from heaven with His mighty angels, (8) in flaming fire taking vengeance on those who do not know God, and on those who do not obey the gospel of our Lord Jesus Christ. (9) These shall be punished with everlasting destruction from the presence of the Lord and from the glory of His power, (10) when He comes, in that Day, to be glorified in His saints and to be admired among all those who believe, because our testimony among you was believed.