'O God' in the Bible

'And thou hast passed on thence, and beyond, and hast come in unto the oak of Tabor, and found thee there have three men going up unto God to Beth-El, one bearing three kids, and one bearing three cakes of bread, and one bearing a bottle of wine,

And Saul saith, 'Let us go down after the Philistines by night, and we prey upon them till the light of the morning, and leave not a man of them.' And they say, 'All that is good in thine eyes do.' And the priest saith, 'Let us draw near hither unto God.'