Psalm 57:7 in the King James Version
My heart is fixed, O God, my heart is fixed: I will sing and give praise.
Context
6 They have prepared a net for my steps. My soul is bowed down. They dig a pit before me. They fall into the middle of it themselves. Selah.
7 My heart is steadfast, God. My heart is steadfast. I will sing, yes, I will sing praises.
8 Wake up, my glory! Wake up, lute and harp! I will wake up the dawn.