Peter the apostle is also a bit of a theologian. In second Peter chapter three he addresses an issue relating to the creation story. Evidently, the apostle was dealing with a question that had come up about the second coming and what seemed to be a delay or even a failure of God's promise to return. Verse 3 and 4 talks about scoffers and lustful people who are the ones calling into question God's word.
"Where is the promise of his coming? For since the fathers fell asleep, all things continue as they were from the beginning of creation." 2Pet.3:4
Peter says that these people are "willfully" ignorant. They are not just forgetful or unsure. They have examined the facts and chosen to not believe God's word. Peter takes a moment to remind them, and us, that creation proves the reliability of God's promises. He talks about creation, the flood, and the coming fiery judgement as proof that God's word is reliable and true.
"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." verse 8
The reason for delay is found firmly in God's unwillingness that any should go into eternity without having a chance to repent. Just as sure as the world was created by God, so all people will give an account of their lives and stand for judgement with God.
"The Lord is not slack concerning his promise, as some count slackness, but is longsuffering toward us, not willing that any should perish but that all should come to repentance." Verse 9.
It is interesting to me that the message of the first apostles is always repent, and believe.