O: They, the men talked about in verses 1-2, who follow God's law are strong and plentiful. God will reward them with generations of propensity.
A: if we can be like the people in verses 1-2, God will reward us in His way. But we must remember, God rewards how he sees fit. It's not a "I'll be good if you let me -----." God answers our prayers in the way they should be answered, according to his will.
P: God, let me always be steadfast like the tree planted near the water so that my leaves never with. Lead me, and I will follow. Amen.