Psalm 100:3-5

3: Know ye that the LORD he is God: it is he that hath made us, and not we  ourselves; we are his people, and the sheep of his pasture.

4: Enter into his gates with thanksgiving, and into his courts with praise: be thankful unto him, and bless his name.

5: For the LORD is good; his mercy is everlasting; and his truth endureth to all generations.