'Oh' in the Bible

Now Jabez called on the God of Israel, saying, “Oh that You would bless me indeed and enlarge my border, and that Your hand might be with me, and that You would keep me from harm that it may not pain me!” And God granted him what he requested.

David had a craving and said, “Oh that someone would give me water to drink from the well of Bethlehem, which is by the gate!”

Oh give thanks to the Lord, call upon His name;Make known His deeds among the peoples.