The waters, to wit, of the sea; for of the upper waters coming out of the clouds he spoke before. With bounds; which are partly the rocks and shores, and principally God's appointment, made at the first creation, and renewed after the deluge, Genesis 9:11,15, that the waters should not overwhelm the earth: see Job 38:8,10,11 Psa 104:3 Jeremiah 5:22. Until the day and night come to an end, i.e. unto the end of the world, for so long these vicissitudes of day and night are to continue, Genesis 8:22, Genesis 9:9 Jeremiah 5:22, Jeremiah 31:35,36.
Related Commentaries of Job 26:10
Job 26:10
10 He hath compassed the waters with bounds, until the day and night come to an end.