'Mountain of God' in the Bible

Now, Moses, was shepherding the flock of Jethro his father-in-law priest of Midian, - so he led forth the flock behind the desert, and came in unto the mountain of God to Horeb.

And Yahweh said unto Aaron, Go thy way to meet Moses, towards the desert. So he went his way, and fell in with him in the mountain of God and kissed him.

And Jethro, Moses father-in-law, came in, with his two sons and his wife, unto Moses, - into the desert where, he, was encamping, the mountain of God;

And Moses rose up, and Joshua his attendant, and Moses went up into the mountain of God;