2Pe 3:8-10
"But do not overlook this one fact, beloved, that with the Lord one day is as a thousand years, and a thousand years as one day. The Lord is not slow to fulfill his promise as some count slowness, but is patient toward you, not wishing that any should perish, but that all should reach repentance. But the day of the Lord will come like a thief."
The response to the problem of 'delay': God is not bound by our linear time. The delay is patience (makrothymei) — God desires all to repent. The Day will come like a thief — unexpectedly. The certainty is not about when, but about what: judgment and renewal are sure.
2Pe 3:13
"But according to his promise we are waiting for new heavens and a new earth in which righteousness dwells."
The ultimate hope: new heavens and a new earth (kainous ouranous kai gen kainen) — not destruction, but renewal. The characteristic of the new creation: 'in which righteousness dwells' (dikaiosyne katoikei). The new creation is the home of righteousness — which this world never was.