HEBREWS 4:13 Nothing in all creation is hidden from God's sight. Everything is uncovered and laid bare before the eyes of him to whom we must give account.
BENSON COMMENTARY In the sight of God, whose word is thus powerful; for it is God in whose sight, or before whom, Greek ενωπιο, αυτου, every creature is manifest, and of this his word, working on the conscience, gives the fullest conviction;
BARNES' NOTES The "design" of the remark here is, to guard from self-deception - since they could conceal nothing from God.
GILL'S EXPOSITIONS he knows their persons, he sees their actions, even those that are most secretly devised and performed against him, and his saints;