New Living Translation
It is hidden from the eyes of all humanity. Even the sharp-eyed birds in the sky cannot discover it.

American Standard Version
Seeing it is hid from the eyes of all living, And kept close from the birds of the heavens.

Berean Study Bible
It is hidden from the eyes of every living thing and concealed from the birds of the air.

Douay-Rheims Bible
It is hid from the eyes of all living. and the fowls of the air know it not.

English Revised Version
Seeing it is hid from the eyes of all living, and kept close from the fowls of the air.

King James Bible
Seeing it is hid from the eyes of all living, and kept close from the fowls of the air.

World English Bible
Seeing it is hidden from the eyes of all living, and kept close from the birds of the sky.

Young's Literal Translation
It hath been hid from the eyes of all living. And from the fowl of the heavens It hath been hidden.

Job 28:21 Additional Translations ...