He only is my rock ... - See the notes at Psalm 62:2. The only difference between this verse and Psalm 62:2 is, that in this verse the word "greatly" is omitted. The psalmist declares here in the most absolute manner, that he shall not be "moved" at all. In Psalm 62:2, he said that he would not be "greatly moved;" his mind would not be much or materially disturbed. The language here indicates more entire confidence - more certain conviction - showing that the slight apprehension or fear which existed in the beginning of the psalm, had been wholly dissipated, and that his mind had become perfectly calm.

He only is my rock and my salvation,.... See Gill on Psalm 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 Psalm 62:2.

He only is my rock and my salvation: he is my defence; I shall not be moved.

6. not be moved-not at all; his confidence has increased.

62:1-7 We are in the way both of duty and comfort, when our souls wait upon God; when we cheerfully give up ourselves, and all our affairs, to his will and wisdom; when we leave ourselves to all the ways of his providence, and patiently expect the event, with full satisfaction in his goodness. See the ground and reason of this dependence. By his grace he has supported me, and by his providence delivered me. He only can be my Rock and my salvation; creatures are nothing without him, therefore I will look above them to him. Trusting in God, the heart is fixed. If God be for us, we need not fear what man can do against us. David having put his confidence in God, foresees the overthrow of his enemies. We have found it good to wait upon the Lord, and should charge our souls to have such constant dependence upon him, as may make us always easy. If God will save my soul, I may well leave every thing else to his disposal, knowing all shall turn to my salvation. And as David's faith in God advances to an unshaken stedfastness, so his joy in God improves into a holy triumph. Meditation and prayer are blessed means of strengthening faith and hope.