You know when I sit down and when I rise up; you discern my thoughts from afar.
David refuses the hiding places where men cloak themselves in lies. He fixes on a truth that strips all pretense bare: nothing escapes God's sight, not because He watches from afar, but because He shaped us bone by bone in darkness and cannot be ignorant of what He has made.
AI summary
Commenting on Psalm 139:1-24
Thou knowest my downsitting and mine uprising. Me thou knowest, and all that comes of me. I am observed when I quietly sit down, and marked when I resolutely rise up. My most common and casual acts, my most needful and necessary movements, are noted by time, and thou knowest the inward thoughts which regulate them.
David here lays down this great doctrine, That the God with whom we have to do has a perfect knowledge of us, and that all the motions and actions both of our inward and of our outward man are naked and open before him. I.
Commenting on Psalm 139:1-6