Psalm 59:17

Unto thee, my strength, will I sing psalms; for God is my high fortress, the God of my mercy.

Psalm 59:9-10

Their strength! ... I will take heed to thee; for God is my high fortress.

Psalm 18:1

{To the chief Musician. A Psalm of David, the servant of Jehovah, who spoke to Jehovah the words of this song in the day that Jehovah had delivered him out of the hand of all his enemies and out of the hand of Saul. And he said,} I will love thee, O Jehovah, my strength.

Psalm 46:1

{To the chief Musician. Of the sons of Korah. On Alamoth. A song.} God is our refuge and strength, a help in distresses, very readily found.

Treasury of Scripture Knowledge

Summary

Unto thee, O my strength, will I sing: for God is my defence, and the God of my mercy.

Bible References

O my

Psalm 18:1
{To the chief Musician. A Psalm of David, the servant of Jehovah, who spoke to Jehovah the words of this song in the day that Jehovah had delivered him out of the hand of all his enemies and out of the hand of Saul. And he said,} I will love thee, O Jehovah, my strength.
Psalm 46:1
{To the chief Musician. Of the sons of Korah. On Alamoth. A song.} God is our refuge and strength, a help in distresses, very readily found.

For

Psalm 59:9
Their strength! ... I will take heed to thee; for God is my high fortress.