WEB
Now Moses was keeping the flock of Jethro, his father-in-law, the priest of Midian, and he led the flock to the back of the wilderness, and came to God’s mountain, to Horeb.
YLT
And Moses hath been feeding the flock of Jethro his father-in-law, priest of Midian, and he leadeth the flock behind the wilderness, and cometh in unto the mount of God, to Horeb;