Proverbs 23:5

5. That which is not This assigns a reason for the preceding admonition. Why pursue so eagerly that which is so uncertain and evanescent? Stuart’s rendering is good: “Wilt thou suffer thine eyes to fly toward it.” “To flit over it.” Conant. It is, indeed, no more, (Job 7:9;) for it will surely make itself wings and fly away.

As an eagle toward heaven “As an eagle and the birds of heaven.” Conant. Compare Matthew 6:20.