The repetition of this command emphasizes its importance. It frames the passage about human dignity (vv5-6) on both sides — the value of life and the call to fill the earth with it. Life is precious and life is meant to flourish.
Memory phrase: God wants life to flourish.
Talk about it: What do you think it means to 'fill the earth abundantly'? What does a full, flourishing life look like?
Prayer: God, help my life to flourish and to bring life to others around me.