He only is my rock and my salvation,.... See Gill on Psa 62:2; he is my defence; these epithets of God are repeated, to strengthen his faith and hope in him, and to encourage a patient waiting upon him; I shall not be moved; neither greatly, nor at all; his faith gets fresh strength and rigour, the more he considers God as his rock, salvation, defence, and refuge; See Gill on Psa 62:2.