I believe the answer as to why Jesus waits and delays His coming is in the Scriptural reference below:
"The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, NOT WILLING THAT ANY SHOULD PERISH, but that all should come to repentance. 2 Peter 3:9. Emphasis mine throughout.
1. "The Lord is not slack concerning His promise."
One of the great promises in all the Bible is found in John 14:2, 3:
"In my Father's house are many mansions: if it were not so, I would have told you. I go to prepare a place for you. And if I go and prepare a place for you, I WILL COME AGAIN, and receive you unto myself; that where I am, there ye may be also."
AND EVERY FAITHFUL FOLLOWER OF CHRIST BELIEVES THAT, takes Christ at His Word, and so orders his/her life to reflect this belief in what is written in John 14:2, 3.
2. "Is longsuffering to us-ward, NOT WILLING THAT ANY SHOULD PERISH, but that all should come to repentance."
What wonderful news!! God suffers long toward us stubbon and stiff-necked sinners TRYING TO SAVE US because He is not willing that anyone should perish. Therefore He does all He can to give us another chance at eternal life. Praise God!!
God is not the author of death; He is the Author of Life!! (John 11:25). Death is an enemy and exists in the world today NOT BECAUSE OF GOD, but because of sin (Rom. 6:23; 1 Cor. 15:22). The destruction of the wicked is referred to in Isaiah 28:21 as God's strange act. It is His strange act because GOD IS THE AUTHOR OF LIFE, and not of death.
"And after these things I saw four angels standing on the four corners of the earth, holding the four winds of the earth, that the wind should not blow on the earth, nor on the sea, nor on any tree. And I saw another angel ascending from the east having the seal of the living God: and he cried with a loud voice to the four angels, to whom it was given to hurt the earth and he sea, Saying, hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads. Revelation 7:1-3.
God, in His Goodness and Mercy, has instructed His angels to hold back the winds of strife that are soon to be let loose upon all the earth and is patiently waiting AND GIVING US TIME to get right with Him because the Coming of the Lord shall be as a thief in the night (2 Peter 3:10):
"For when they shall say, Peace and safety; THEN SUDDEN DESTRUCTION COMETH UPON THEM...and they shall not escape. 1 Thessalonians 5:3.
M.A.