Genesis 1:22
21 God created the great sea creatures and every living and moving thing with which the water swarmed, according to their kinds, and every winged bird according to its kind. God saw that it was good. 22 God blessed them and said, “Be fruitful and multiply and fill the water in the seas, and let the birds multiply on the earth.” 23 There was evening, and there was morning, a fifth day.
Leviticus 26:9
8 Five of you will pursue a hundred, and a hundred of you will pursue ten thousand, and your enemies will fall before you by the sword. 9 I will turn to you, make you fruitful, multiply you, and maintain my covenant with you. 10 You will still be eating stored produce from the previous year and will have to clean out what is stored from the previous year to make room for new.
Notes and References
"... “to be fruitful” and “to be numerous” (Genesis 1:22, 28; Leviticus 26:9). The syntactical combination of these terms as a set phrase is uncommon in the Old Testament. It appears only fifteen times (Genesis 1:22, 28; 8:17; 9:1, 7; 17:20; 28:3; 35:11; 47:27; 48:4; Exodus 1:7; Leviticus 26:9; Jeremiah 3:16; 23:3; Ezekiel 36:11). Genesis 1 is programmatic. The imperative forms used (“be fruitful and multiply”) make concrete the pronouncement of divine blessing upon both creatures (1:22) and humans (1:28). Throughout the remainder of Genesis the word pair functions to chart the outworking of this creation blessing and mandate. In Genesis 8–9, use of the phrase indicates that divine intent remains unchanged in the postdiluvian world, for both creatures (8:17) and humanity (9:1, 7). Promise of fruitfulness and multiplication later becomes a central tenet of the patriarchal covenants ..."
Harper, G. Geoffrey "I Will Walk among You": The Rhetorical Function of Allusion to Genesis 1-3 in the Book of Leviticus (p. 285) Eisenbrauns, 2018