For this they willingly are ignorant of, that by the word of God the heavens were of old, and the earth standing out of the water and in the water: Whereby the world that then was, being overflowed with water, perished. (2 Peter 3:5-6)

For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. ( John 3:16 )

But Noah found grace in the eyes of the LORD. ( Genesis 6:8 )

It may be a curious reflection on our Western culture, but the “thank you”of normal social interchange does not have a counterpart in the Bible. The declining custom of writing thank you notes has some implied connection to the biblical emphasis, but those social manners are more related to our sense of reciprocity than is reflected in Scripture.