From yadah (H3034, to give thanks/praise), todah is the thank offering brought to the temple as expression of gratitude for deliverance — a sacrificial meal shared with community. It also denotes the choir or procession of singers giving thanks, making it both a ritual act and a musical-liturgical term.
Psalm 100 ('A Psalm for the todah-offering') centers Israel's worship on gratitude: 'Enter his gates with thanksgiving (todah).' The todah offering in Leviticus 7 was an occasion to tell one's story of God's deliverance publicly — bringing food, sharing with the community, proclaiming what God had done. Many scholars see the Lord's Supper as a todah meal: the community gathered around the bread and cup, proclaiming the Lord's death 'till he comes.'