Genesis 7:4 HCSB Seven days from now I will make it rain on the earth 40 days and 40 nights, and I will wipe off the face of the earth every living thing I have made."

40 days and 40 nights. Oddly an oft’ recurring number of days usually associated with spiritual preparation (e.g. Exodus 24:18; 34:28; Numbers 14:34; Deuteronomy 9:9-11; 1 Samuel 17:16; 1 Kings 19:8; Ezekiel 4:6; Jonah 3:4; Matthew 4:2; Acts 1:3).