'Lo' in the Bible

For the Lord had made the host of the Syrians to hear a noise of chariots, and a noise of horses, even the noise of a great host: and they said one to another, Lo, the king of Israel hath hired against us the kings of the Hittites, and the kings of the Egyptians, to come upon us.

And they went after them unto the Jordan: and, lo, all the way was full of garments and vessels, which the Syrians had cast away in their haste. And the messengers returned, and told the king.