For His Glory

For His glory, His alone,
May my light shine day by day.
We are called to work and pray,
For His glory, His alone.

No good works for sin atone,
Jesus' work our sin effaced!
So we thank Him for His grace,
For His glory, His alone.

Leaning on God's strength alone,
Humbly let us own Him King.
He's the One who bids us sing
For His glory, His alone.

Joy to serve, with not a moan--
When on His love we rely,
Our hearts with sweet cheer reply,
For His glory, His alone.

-M.A.M. (7-20-11)
John Piper said it better in this sermon. I'd encourage a listen.