Psalm 66 - Praising God for His Mighty Works-Main Point- Praise and bless God for his redeeming and refining works - and testify of them.--1. Praise God for his work of redemption -vv. 1-7-.--2. Bless God for his work of refinement -vv. 8-12-.--3. Testify of God's kindness in his works -vv. 13-20-.