Verse 7. O GOD the Lord, the strength of my salvation, thou hast covered my head in the day of battle. When he looked back upon past dangers and deliverances, the good man felt that he should have perished had not the Lord held a shield over his head. In the day of the clash of arms, or of the putting on of armour (as some read it), the glorious Lord had been his constant Protector. Goliath had his armour bearer, and so had Saul, and these each one guarded his master; yet the giant and the king both perished, while David, without armour or shield, slew the giant and baffled the tyrant. The shield of the Eternal is a better protection than a helmet of brass, When arrows fly thick and the battle axe crashes right and left, there is no covering for the head like the power of the Almighty. See how the child of providence glorifies his Preserver! He calls him not only his salvation, but the strength of it, by whose unrivalled force he had been enabled to outlive the cunning and cruelty of his adversaries. He had obtained a deliverance in which the strength of the Omnipotent was clearly to be seen. This is a grand utterance of praise, a gracious ground of comfort, a prevalent argument in prayer. He that has covered our head aforetime will not now desert us. Wherefore let us fight a good fight, and fear no deadly wound: the Lord God is our shield, and our exceeding great reward.
EXPLANATORY NOTES AND QUAINT SAYINGS
Verse 7. Thou hast covered my head in the day of battle. Hebrew, of armour. For David had never indeed any battle with Saul, but declined it; but Saul often armed against him; but then God's providence covered him as a shield: but the head is only spoken of to set forth his whole body, because that is chiefly aimed at by the enemy, as where the life principally lieth. --John Mayer.
Verse 7. Thou hast covered my head in the day of battle. A captain or prince had always beside him in battle an armour bearer, whose duty it was "to cover his master's head", that is, to ward off with the shield the blows aimed at his head, and which, in the heat of the fight, had escaped his own notice. --Benjamin Weiss.