Jamieson, Fausset and Brown on Psalms 23:1

PSALM 23

Psa 23:1-6. Under a metaphor borrowed from scenes of pastoral life, with which David was familiar, he describes God's providential care in providing refreshment, guidance, protection, and abundance, and so affording grounds of confidence in His perpetual favor.

1. Christ's relation to His people is often represented by the figure of a shepherd (Joh 10:14; He 13:20; 1Pe 2:25; 5:4), and therefore the opinion that He is the Lord here so described, and in Ge 48:15; Psa 80:1; Is 40:11, is not without some good reason.