He is not yet sitting on His own throne He receives in Rev 4:2.
That is not true.
Jesus Christ is Lord
This is fundamental Christian doctrine from the beginning. Peter testified to this truth when the Gospel was proclaimed at Pentecost;
30 Therefore being a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins, according to the flesh, he would raise up Christ to sit on his throne
; 31 He seeing this before spake of the resurrection of Christ, that his soul was not left in hell, neither his flesh did see corruption. 32 This Jesus hath God raised up, whereof we all are witnesses. 33 Therefore being by the right hand of God exalted, and having received of the Father the promise of the Holy Ghost, he hath shed forth this, which ye now see and hear.
34 For David is not ascended into the heavens: but he saith himself, The LORD said unto my Lord, Sit thou on my right hand,
35 Until I make thy foes thy footstool. 36 Therefore let all the house of Israel know assuredly, that God hath made that same Jesus, whom ye have crucified, both Lord and Christ
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
Also notice ".. at his coming. Then cometh the end .."
9 Wherefore God also hath highly exalted him, and given him a name which is above every name: 10 That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth; 11 And that every tongue should confess that Jesus Christ is Lord
, to the glory of God the Father.
Not will be
Lord, but is
13 Who hath delivered us from the power of darkness, and hath translated us into the kingdom of his dear Son
: 14 In whom we have redemption through his blood, even the forgiveness of sins:
The Kingdom & reign of the Lord Jesus Christ
is now for we are translated in to the Kingdom of the Lord Jesus Christ upon redemption when we are chosen, adopted by God, to be the very Children of God through the blood of the Lord Jesus Christ.