3 First of all you must understand this, that scoffers will come in the last days with scoffing, following their own passions 4 and saying, “Where is the promise of his coming? For ever since the fathers fell asleep, all things have continued as they were from the beginning of creation.” … 8 But do not ignore this one fact, beloved, that with the Lord one day is as a thousand years, and a thousand years as one day. 9 The Lord is not slow about his promise as some count slowness, but is forbearing toward you, not wishing that any should perish, but that all should reach repentance. (2 Peter 3:3-4, 8-9)
…I want you to understand this mystery, brethren: a hardening has come upon part of Israel, until the full number of the Gentiles come in, 26 and so all Israel will be saved… (Romans 11:25b-26a)
If I was God, I would probably be waiting until the time when the total number of the saved was at a maximum and the total number of the damned was at a minimum.