NET
4 Then I will go to the altar of God, to the God who gives me ecstatic joy, so that I may express my thanks to you, O God, my God, with a harp.
Darby
4 Then will I go unto the altar of God, unto the God of the gladness of my joy: yea, upon the harp will I praise thee, O God, my God.
KJV
4 Then will I go unto the altar of God, unto God my exceeding joy: yea, upon the harp will I praise thee, O God my God.