Thanks for your question.
At his resurrection Jesus was given full authority in heaven and earth.
Matthew 28:18 And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth.
He exercises God’s power in the same way that Joseph exercised Pharaoh’s power in Egypt. Joseph was a type of Christ in this respect.
Genesis 41:40 Thou shalt be over my house, and according unto thy word shall all my people be ruled: only in the throne will I be greater than thou.
All judgment has been committed unto him.
John 5:22 For the Father judgeth no man, but hath committed all judgment unto the Son:
Revelation 3:21 To him that overcometh will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne.
He sits at the right hand of God.
Hebrews 12:2 Looking unto Jesus the author and finisher of our faith; who for the joy that was set before him endured the cross, despising the shame, and is set down at the right hand of the throne of God.
His authority extends not just over the angels of heaven but also over the governments of the earth.
1 Peter 3:22 Who is gone into heaven, and is on the right hand of God; angels and authorities and powers being made subject unto him.
He acts as High Priest to make intercession for us with his Father.
Hebrews 7:24 But this man, because he continueth ever, hath an unchangeable priesthood.
25 Wherefore he is able also to save them to the uttermost that come unto God by him, seeing he ever liveth to make intercession for them.
Hebrews 8:1 Now of the things which we have spoken this is the sum: We have such an high priest, who is set on the right hand of the throne of the Majesty in the heavens;
Romans 8:34 Who is he that condemneth? It is Christ that died, yea rather, that is risen again, who is even at the right hand of God, who also maketh intercession for us.
His priesthood is faithful because he experienced for himself our infirmities.
Hebrews 4:14 Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.
15 For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.
He acts as an advocate; a mediator.
1 John 2:1 My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:
2 And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.
1 Timothy 2:5 For there is one God, and one mediator between God and men, the man Christ Jesus;
By the omnipresence of the spirit of God he knows our hearts and minds.
Romans 8:27 And he that searcheth the hearts knoweth what is the mind of the Spirit, because he maketh intercession for the saints according to the will of God.
He is ever present in spirit with those who will be heirs of salvation (though they have no conscious awareness of it).
Matthew 28:20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen.
Hebrews 13:5 Let your conversation be without covetousness; and be content with such things as ye have: for he hath said, I will never leave thee, nor forsake thee.
He has active control of the lives of his saints.
Acts 12:11 And when Peter was come to himself, he said, Now I know of a surety, that the Lord hath sent his angel, and hath delivered me out of the hand of Herod, and from all the expectation of the people of the Jews.
Acts 26:15 And I said, Who art thou, Lord? And he said, I am Jesus whom thou persecutest.
16 But rise, and stand upon thy feet: for I have appeared unto thee for this purpose, to make thee a minister and a witness both of these things which thou hast seen, and of those things in the which I will appear unto thee;
17 Delivering thee from the people, and from the Gentiles, unto whom now I send thee,
2 Timothy 3:11 Persecutions, afflictions, which came unto me at Antioch, at Iconium, at Lystra; what persecutions I endured: but out of them all the Lord delivered me.
He has active control of his ecclesias.
This is evident in the letters to the churches in Revelation. Two examples should suffice.
Revelation 2:1 Unto the angel of the church of Ephesus write...
2 I know thy works...
4 Nevertheless I have somewhat against thee, because thou hast left thy first love.
5 Remember therefore from whence thou art fallen, and repent, and do the first works; or else I will come unto thee quickly, and will remove thy candlestick out of his place, except thou repent.
Revelation 2:18 And unto the angel of the church in Thyatira write...
19 I know thy works...
20 Notwithstanding I have a few things against thee, because thou sufferest that woman Jezebel, which calleth herself a prophetess, to teach and to seduce my servants to commit fornication, and to eat things sacrificed unto idols.
21 And I gave her space to repent of her fornication; and she repented not.
22 Behold, I will cast her into a bed, and them that commit adultery with her into great tribulation, except they repent of their deeds.
23 And I will kill her children with death; and all the churches shall know that I am he which searcheth the reins and hearts: and I will give unto every one of you according to your works.
He works (as God worked with Israel) behind the scenes to bring God’s purpose to fruition.
His control his symbolised by his opening of the seven-sealed scroll in Revelation. He was the only one in heaven or earth that had the ability to do it.
His stay at God’s right hand is temporary. At the time appointed he will return to set up the kingdom of God.
Acts 3:21 Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began.
Paul summarises his future work thus:
1 Corinthians 15:22 For as in Adam all die, even so in Christ shall all be made alive.
23 But every man in his own order: Christ the firstfruits; afterward they that are Christ’s at his coming.
24 Then cometh the end, when he shall have delivered up the kingdom to God, even the Father; when he shall have put down all rule and all authority and power.
25 For he must reign, till he hath put all enemies under his feet.
26 The last enemy that shall be destroyed is death.
27 For he hath put all things under his feet. But when he saith all things are put under him, it is manifest that he is excepted, which did put all things under him.
28 And when all things shall be subdued unto him, then shall the Son also himself be subject unto him that put all things under him, that God may be all in all.
God’s declared purpose will be accomplished through his son.
Numbers 14:21 But as truly as I live, all the earth shall be filled with the glory of the LORD.
I hope this helps.