David acknowledges God’s ownership and authority over everything in his praise to God. He had the revelation and faith to recognize that God is sovereign and is in complete control. He had lapses in judgment and made mistakes that brought him tremendous hardship and disappointment, but He remained true to the Lord and understood God’s mercy.
Our giving to God is similar to a father giving his child money so he can buy his dad a birthday present. God owns everything and gives us free use of it. Everything comes from God, and anything we give Him belongs to Him. God is pleased when we express faith in Him and honor Him with our wealth. He is greatly pleased when we give generously to His church and help the poor.
When we delight in the Lord, He puts His desires in our hearts so we are motivated to express even greater trust and faith in Him. In this way, His love abounds in us more and more. When we practice our righteousness in secret so that He alone knows what is done, He is faithful to reward us in an infinite variety of ways.