2 Pe 3:8 But, beloved, do not forget this one thing, that with the Lord one day is as a thousand years, and a thousand years as one day.
The context of the passage is about the seeming delay of the coming of the Lord Jesus Christ to judge the world and fulfill God's promises. Peter tells them that the seeming delay is only felt by us finite creatures imprisoned in time.
God is never behind and ahead of His scheduled plan. It will arrive on time. God is not confined by time. He works from eternity. To us a thousand years is a very, very long time, a day may seem very short, comparatively speaking. Yet to God, they are all the same.
He can bring about what He wants to happen in a thousand years, but He can also bring about what He wants to happen in a day, no cinch, piece of cake, if He wills.
But God deliberately set up a schedule of the day of the Lord's judgment long enough so that sinners may have time to repent.
2Pe 3:9 The Lord is not slow in fulfilling His promise, in the sense in which some men speak of slowness. But He bears patiently with you, His desire being that no one should perish but that all should come to repentance.
P.S. God may work with time, but He is not a part of time. Einstein has proven that time is even part of the physical universe! He called it the space-time continuum.
