'O God' in the Bible

Then you are to go on from there, and when you come to the oak-tree of Tabor, you will see three men going up to God to Beth-el, one having with him three young goats and another three cakes of bread and another a skin full of wine:

And Saul said, Let us go down after the Philistines by night, attacking them till the morning, till there is not a man of them living. And they said, Do whatever seems right to you. Then the priest said, Let us come near to God.