'Oh' in the Bible

Jabez cried out to the God of Israel, saying, “Oh that You would indeed bless me and enlarge my border [property], and that Your hand would be with me, and You would keep me from evil so that it does not hurt me!” And God granted his request.

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