'Understand' in the Bible

Jehovah looked down from the heavens upon the children of men, to see if there were any that did understand, that did seek God.

God looked down from the heavens upon the children of men, to see if there were any that did understand, that did seek God.

They know not, neither do they understand; they walk on in darkness: all the foundations of the earth are moved.

A brutish man knoweth not, neither doth a fool understand it.

Understand, ye brutish among the people; and ye fools, when will ye be wise?

Whoso is wise, let him observe these things, and let them understand the loving-kindnesses of Jehovah.

Make me to understand the way of thy precepts, and I will meditate upon thy wondrous works.

I understand more than the aged, because I have observed thy precepts.