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Job 39:28BSB·author unknown

He dwells on a cliff and lodges there; his stronghold is on a rocky crag.

Matthew Henry Presbyterian @wholebiblehenry

The birds of the air are proofs of the wonderful power and providences of God, as well as the beasts of the earth; God here refers particularly to two stately ones: - 1. The hawk, a noble bird of great strength and sagacity, and yet a bird of prey, Job 39:26.

Commenting on Job 39:26-30

John Gill Reformed Baptist @doctorgill

She dwelleth and abideth on the rock, upon the crag of the rock, and the strong place. Where she and her young are safe: so Pliny (r) says, eagles make their nests in rocks, even in the precipices of them, as the philosopher quoted in the preceding verse; and here on the tooth, edge, or precipice of the rock, which is inaccessible, and so like a strong fortified place.

Jamieson-Fausset-Brown Reformed @jfbcommentary

abideth--securely (Psa 91:1); it occupies the same abode mostly for life. crag--literally, "tooth" (Sa1 14:5, Margin). strong place--citadel, fastness.