In God is my salvation - See Psalms 62:1. That is, his salvation, his safety, his anticipated deliverance, was to come only from God.
And my glory - That in which I glory or boast; the source of all in me that is glorious or honorable. he gloried that there was such a God; he gloried that He was his God.
The rock of my strength - The strong rock; the refuge that cannot be successfully assailed; where I shall feel strong and secure. See the notes at Psalms 18:2.
My refuge - That to which I may flee for safety. See the notes at Psalms 46:1.