“Noah, with his sons, wife, and his sons’ wives, went in into the ark because of the waters of the flood.”
~ Genesis 7:7
Before bringing the flood, God warns Noah and commands him to build an ark. However, despite knowing all along that the flood was certainly coming, Noah and his family only enter the ark when the waters force them to.
Because humans suffer from selective truth. Although we know something to be true, our personal desires delay an appropriate response. Consequently, it takes getting wet before we move out the rain. Better to respond the moment the thunder starts.