I give thanks to you, O Lord my God, with my whole heart, and I will glorify your name forever. Psalm 86:12

Giving thanks with one’s heart is not the same as singing songs and talking about thankfulness. Glory for God and thankfulness to Him are expressed best from the heart and in non verbal ways. As the Lord Jesus says: In the same way, let your light shine before others, so that they may see your good works and give glory to your Father who is in heaven. (Matthew 5: 16)