Genesis 9:7

9:7 But as for you, ¹  be fruitful and multiply; increase abundantly on the earth and multiply on it.”

Genesis 1:21

1:21 God created the great sea creatures ²  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.

[9:7]  ¹ sn The disjunctive clause (conjunction + pronominal subject + verb) here indicates a strong contrast to what has preceded. Against the backdrop of the warnings about taking life, God now instructs the people to produce life, using terms reminiscent of the mandate given to Adam (Gen 1:28).

[1:21]  ² tn For the first time in the narrative proper the verb “create” (בָּרָא, bara’) appears. (It is used in the summary statement of v. 1.) The author wishes to underscore that these creatures – even the great ones – are part of God’s perfect creation. The Hebrew term תַנִּינִם (tanninim) is used for snakes (Exod 7:9), crocodiles (Ezek 29:3), or other powerful animals (Jer 51:34). In Isa 27:1 the word is used to describe a mythological sea creature that symbolizes God’s enemies.