Psalms 18:2

The Lord is my Rock, his safe place of concealment, and my Fortress, his Stronghold, affording refuge and safety, and my Deliverer; my God, my Strength, his Rock of Ages, firm, immovable, in whom I will trust; my Buckler, the large shield which protected the whole body against injury, and the Horn of my salvation, the horn of the altar being the figure of protective strength and victorious deliverance, and my high Tower, inaccessible to the enemies. Having thus given the reason for his firm trust, the psalmist gives a recital of some of the occasions when his confidence was justified.