'Behold' in the Bible

Is there a thing of which it may be said, "Behold, this is new?" It has been long ago, in the ages which were before us.

I have seen all the works that are done under the sun; and behold, all is vanity and a chasing after wind.

I said to myself, "Behold, I have obtained for myself great wisdom above all who were before me in Jerusalem. Yes, my heart has had great experience of wisdom and knowledge."

I said in my heart, "Come now, I will test you with mirth: therefore enjoy pleasure;" and behold, this also was vanity.

Then I looked at all the works that my hands had worked, and at the labor that I had labored to do; and behold, all was vanity and a chasing after wind, and there was no profit under the sun.

Then I returned and saw all the oppressions that are done under the sun: and behold, the tears of those who were oppressed, and they had no comforter; and on the side of their oppressors there was power; but they had no comforter.

Behold, that which I have seen to be good and proper is for one to eat and to drink, and to enjoy good in all his labor, in which he labors under the sun, all the days of his life which God has given him; for this is his portion.

"Behold, I have found this," says the Preacher, "one to another, to find out the scheme;

Behold, this only have I found: that God made man upright; but they search for many schemes."