Charles H. Spurgeon on Psalms 5:12

Jehovah has ordained his people the heirs of blessedness, and nothing shall rob them of their inheritance. With all the fulness of his power he will bless them, and all his attributes shall unite to satiate them with divine contentment. Nor is this merely for the present, but the blessing reaches into the long and unknown future. "Thou, Lord, wilt bless the righteous." This is a promise of infinite length, of unbounded breadth, and of unutterable preciousness. As for the defence which the believer needs in this land of battles, it is here promised to him in the fullest measure. There were vast shields used by the ancients as extensive as a man's whole person, which would surround him entirely. So says David, "With favour wilt thou compass him as with a shield." According to Ainsworth there is here also the idea of being crowned, so that we wear a royal helmet, which is at once our glory and defence. O Lord, ever give to us this gracious coronation!