"Shout for joy in the Lord, O you righteous! Praise befits the upright."
There are so many reasons to shout for joy. But I find it interesting that the Scripture says here "shout for joy in the Lord". It's not just that there are things to be happy about, but things to be joyful about in God. What else would there be to be happy in God about except things that relate to who He is?
God, the Creator, gives us life and breath and sustains us. He holds all things in His hands. He is the just and the Justifier (Rom. 3:26). My Redeemer and Savior (Is. 43:11). He blots out transgressions for His name's sake (Is. 43:25). He is compassionate and kind, patient and merciful (Ps. 78:38, 2 Pet. 3:9). He is generous and loving (Num. 14:18). He is the One who gives counsel (Ps. 16:7). My Rock, fortress, Deliverer (Ps. 18:2). All-powerful and mighty (Ps. 50:1). Sovereign (Acts 4:24).
These are just a few of the things we can rejoice over in Him. He is worthy of all our praise!