Genesis 9:17 (WEB)
God said to Noah, “This is the token of the covenant which I have established between me and all flesh that is on the earth.”
Catechism · 1
Prayer is lived in the first place beginning with the realities of creation. the first nine chapters of Genesis describe this relationship with God as an offering of the first-born of Abel's flock, as the invocation of the divine name at the time of Enosh, and as "walking with God.