He has said to me, "My grace is sufficient for you, for power is made perfect in weakness." Most gladly therefore I will rather glory in my weaknesses, that the power of Christ may rest on me.

Forty days

Moses entered into the midst of the cloud, and went up on the mountain; and Moses was on the mountain forty days and forty nights.

He was there with the LORD forty days and forty nights; he neither ate bread, nor drank water. He wrote on the tablets the words of the covenant, the ten commandments.

When I was gone up onto the mountain to receive the tables of stone, even the tables of the covenant which the LORD made with you, then I stayed on the mountain forty days and forty nights; I neither ate bread nor drank water.

And when he had fasted forty days and forty nights, he was hungry afterward.

He was in the wilderness forty days tempted by Satan. He was with the wild animals; and the angels were serving him.

for forty days, being tempted by the devil. He ate nothing in those days. When they were completed, he was hungry.

Horeb

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.

Mount Sinai, all it, smoked, because the LORD descended on it in fire; and its smoke ascended like the smoke of a furnace, and the whole mountain quaked greatly.

"Remember the Law of Moses my servant, which I commanded to him in Horeb for all Israel, even statutes and ordinances.

General references

Jethro, Moses' father-in-law, came with his sons and his wife to Moses into the wilderness where he was encamped, at the Mountain of God.