Psalm 66
We are not told who wrote this psalm,nor the occasion. However, it is a call to praise the Lord. Praising the Lord is what we were created for. When we praise Him we are doing what we were designed for. Say to God how awesome are your deeds! Our God is a God who acts, and He defeats His enemies, so that they cringe before Him.
“Come and see what God has done, His awesome deeds for mankind!”. God acts on man’s behalf, his greatest acts in this regard are His creation of us in the first place, and then sending His Son to redeem us. And He rules by His power.
The psalm calls on all peoples to praise the Lord God disciplines His people, but only to refine us. They were oppressed for a time, but then He brings them into a place of abundance. So the psalmist will come to the temple to make offerings to the Lord. He had been rescued by the Lord.