Psalms 100: 2 - 5
2 Serve the LORD with gladness! Come into his presence with singing!
3 Know that the LORD is God! It is he that made us, and we are his; we are his people, and the sheep of his pasture.
4 Enter his gates with thanksgiving, and his courts with praise! Give thanks to him, bless his name!
5 For the LORD is good; his steadfast love endures for ever, and his faithfulness to all generations.

EWTN