'Lo' in the Bible

And they rose up early in the morning, and gat them up into the top of the mountain, saying, Lo, we be here, and will go up unto the place which the LORD hath promised: for we have sinned.

And Balaam said unto Balak, Lo, I am come unto thee: have I now any power at all to say any thing? the word that God putteth in my mouth, that shall I speak.

And he returned unto him, and, lo, he stood by his burnt sacrifice, he, and all the princes of Moab.

For from the top of the rocks I see him, and from the hills I behold him: lo, the people shall dwell alone, and shall not be reckoned among the nations.

Therefore now flee thou to thy place: I thought to promote thee unto great honour; but, lo, the LORD hath kept thee back from honour.