Why do you believe that Jesus is going to return?
I do not find any verses in the NT wherein Jesus promised to return to this world. I fact, I find verses where Jesus said He was not coming back.
Jesus said that He had finished the work that God gave Him to do and He was no more in the world and He was going to the Father. This indicates that Jesus never planned to return (I am no more in the world) and there was no need to return since He finished the work God gave Him to do.
John 17:4 I have glorified thee on the earth: I have finished the work which thou gavest me to do.
John 17:11 And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are.
Then in the next chapter you have the two verses below. These two verses completely negate that Jesus is the King of this world, or that Jesus will ever come to this world to rule it. Jesus came into this world to bear witness unto the truth. He did that so there is no more reason for Jesus to be IN this world again. That is why Jesus said “I am no more in the world.”
John 18:36 Jesus answered, My kingdom is not of this world: if my kingdom were of this world, then would my servants fight, that I should not be delivered to the Jews: but now is my kingdom not from hence.
John 18:37 Pilate therefore said unto him, Art thou a king then? Jesus answered, Thou sayest that I am a king. To this end was I born, and for this cause came I into the world, that I should bear witness unto the truth. Every one that is of the truth heareth my voice.
So the New Testament is either inaccurate or Jesus is not coming back to this world to rule it.