Praise: should be offered with the Whole Heart
Source: TTT
Psalm 9:1
For the choirmaster. To the tune of “The Death of the Son.” A Psalm of David. I will give thanks to the LORD with all my heart; I will recount all Your wonders.
Psalm 111:1
Hallelujah! I will give thanks to the LORD with all my heart in the council of the upright and in the assembly.
Psalm 138:1
Of David. I give You thanks with all my heart; before the gods I sing Your praises.