'Lo' in the Bible

“Lo, for my own welfare I had great bitterness;It is You who has kept my soul from the pit of nothingness,For You have cast all my sins behind Your back.

“Behold, these will come from afar;And lo, these will come from the north and from the west,And these from the land of Sinim.”

Behold, the Lord has proclaimed to the end of the earth,Say to the daughter of Zion, “Lo, your salvation comes;Behold His reward is with Him, and His recompense before Him.”