Before the flood came, God told Noah to build an ark. Before the ark was built, all heard the flood was coming, but they did not consult God. Instead they continued with their sexual immorality and licentious life. The ark had a few (100) years left to build and very supernatural works happened and people still did not believe. Just to think that Noah told the animals to go in pairs on the ark was supernatural because the animals was obedient to Noah. But still no one believed in Him.
Sodom and Gomorrah is a good example of where God has given people time to Repentance and it's all in the Old Testament. The Word of God says that God will never change because He is not human. His yes is yes and no is no.
The period that we had before the ark was finished, it was grace ... until Jesus comes again, is grace.
What do we do with the time left?
Blessed day