Psalms 62:2

He only is my rock and my salvation. Sometimes a metaphor may be more full of meaning and more suggestive than literal speech: hence the use of the figure of a rock, the very mention of which would awaken grateful memories in the psalmists's mind. David had often lain concealed in rocky caverns, and here he compares his God to such a secure refuge; and, indeed, declares him to be his only real protection, all-sufficient in himself and never failing. At the same time, as if to show us that what he wrote was not mere poetic sentiment but blessed reality, the literal word salvation follows the figurative expression: that our God is our refuge is no fiction, nothing in the world is more a matter of fact. He is my defence, my height, my lofty rampart, my high fort. Here we have another and bolder image; the tried believer not only abides in God as in a cavernous rock; but dwells in him as a warrior in some bravely defiant tower or lordly castle. I shall not be greatly moved. His personal weakness might cause him to be somewhat moved; but his faith would come in to prevent any very great disturbance; not much would he be tossed about. Moved, as one says, "but not removed." Moved like a ship at anchor which swings with the tide, but is not swept away by the tempest. When a man knows assuredly that the Lord is his salvation, he cannot be very much cast down: it would need more than all the devils in hell greatly to alarm a heart which knows God to be its salvation.

I shall not be greatly moved - Having God for my rock - strong fortified place, for my salvation - continual safety, and my defense - my elevated tower, which places me out of the reach of my enemies; I shall not be greatly moved - I may be shaken, but cannot be cast down.

He only is my rock ... - See the notes at Psa 18:2. I shall not be greatly moved - The word greatly here, or much - “I shall not be much moved,” implies that he did not anticipate perfect security from danger or calamity; he did not suppose that he would escape all disaster or trouble, but he felt that no great evil would befall him, that his most important interests were safe, and that he would be ultimately secure. He would be restored to his home and his throne, and would be favored with future peace and tranquility. None of us can hope wholly to escape calamity in this life. It is enough if we can be assured that our great interests will be ultimately secured; that we shall be safe at last in the heavenly world. Having that confidence the soul may be, and should be, calm; and we need little apprehend what will occur in this world.