Psalms 18:2

“The Lord [is] my rock, etc.] To whom the saints have recourse for shelter and safety, for supply, support, and divine refreshment; and in whom they are secure, and on whom they build their hopes of eternal life and happiness, and so are safe from all enemies, and from all danger. Christ is called a Rock on all these accounts, (<196102>Psalm 61:2,3) (<233202>Isaiah 32:2 33:16 <401618>Matthew 16:18 <461004>1 Corinthians 10:4); and my fortress; or garrison; so the saints are kept in and by the power of God as in a garrison, (<600105>1 Peter 1:5); and my deliverer: out of all afflictions, and from all temptations, and out of the hands of all enemies; from a body of sin and death at last, and…”

“The various terms used describe God as an object of the most implicit and reliable trust. rock--literally, "a cleft rock," for concealment. strength--a firm, immovable rock. horn of my salvation--The horn, as the means of attack or defense of some of the strongest animals, is a frequent emblem of power or strength efficiently exercised (compare Deu 33:17; Luk 1:69). tower--literally, "high place," beyond reach of danger.”

“The Lord is my rock - The idea in this expression, and in the subsequent parts of the description, is that he owed his safety entirely to God. He had been unto him as a rock, a tower, a buckler, etc. - that is, he had derived from God the protection which a rock, a tower, a citadel, a buckler furnished to those who depended on them, or which they were designed to secure. The word “rock” here has reference to the fact that in times of danger a lofty rock would be sought as a place of safety, or that men would fly to it to escape from their enemies. Such rocks abound in Palestine; and by the fact that they are elevated and difficult of access, or by the fact that those who fled to them could…”

“Rock - To which I flee for refuge, as the Israelites did to their rocks. Horn - It is a metaphor from those beasts whose strength lies in their horns. Psalms 18:4”

“18:2 A shield is an image of protection, salvation, and victory (7:10; 18:2, 30, 35; 84:11; 91:4; 115:9, 10, 11; 119:114; 144:2). It evokes a response of trust, waiting, and godly confidence.”

“Lord: Psa 28:1, Psa 62:2, Psa 62:7; Isa 32:2 fortress: Psa 91:2, Psa 144:2; Jer 16:19 strength: Heb. rock whom: Heb 2:13 buckler: Psa 91:4; Pro 2:7 horn: Psa 132:17; Sa2 22:3 high: Pro 18:10 Psalms 18:3”