Psalm 100 (NIV) — from biblegateway.com

A psalm. For giving grateful praise.

1 Shout for joy to the Lord, all the earth.
2     Worship the Lord with gladness;
    come before him with joyful songs.
3 Know that the Lord is God.
    It is he who made us, and we are his[a];
    we are his people, the sheep of his pasture.

4 Enter his gates with thanksgiving
    and his courts with praise;
    give thanks to him and praise his name.
5 For the Lord is good and his love endures forever;
    his faithfulness continues through all generations.