When Noah was building the ark, the people did not listen. Eventually, the door of Noah's ark was closed by the hand of God. So it will never be opened again. "Behold, now is the accepted time; behold, now is the day of salvation." and salvation is always now. If we miss the opportunity for salvation now, it may never come again. (Ecclesiastes 12:1)"Remember now your Creator in the days of your youth,Before the difficult days come,And the years draw near when you say,"I have no pleasure in them""