'Understand' in the Bible

It happened, when I, even I Daniel, had seen the vision, that I sought to understand it; and behold, there stood before me as the appearance of a man.

I heard a man's voice between [the banks of] the Ulai, which called, and said, Gabriel, make this man to understand the vision.

So he came near where I stood; and when he came, I was frightened, and fell on my face: but he said to me, Understand, son of man; for the vision belongs to the time of the end.

At the beginning of your petitions the commandment went forth, and I have come to tell you; for you are greatly beloved: therefore consider the matter, and understand the vision.

He said to me, Daniel, you man greatly beloved, understand the words that I speak to you, and stand upright; for am I now sent to you. When he had spoken this word to me, I stood trembling.

Then he said to me, Don't be afraid, Daniel; for from the first day that you set your heart to understand, and to humble yourself before your God, your words were heard: and I have come for your words' sake.

Now I have come to make you understand what shall happen to your people in the latter days; for the vision is yet for [many] days:

I heard, but I didn't understand: then I said, my lord, what shall be the issue of these things?

Many shall purify themselves, and make themselves white, and be refined; but the wicked shall do wickedly; and none of the wicked shall understand; but those who are wise shall understand.