Acts 7:30

"After forty years had passed, an angel appeared to him in the wilderness of Mount Sinai, in the flame of a burning bush.

Acts 7:38

This is he who was in the congregation in the wilderness with the angel who spoke to him at Mount Sinai, and with our fathers; and he received living oracles to pass on to us.

Galatians 4:24

This is allegorically speaking, for these women are two covenants. One is from Mount Sinai bearing children who are to be slaves; she is Hagar.

Treasury of Scripture Knowledge

Summary

For they were departed from Rephidim, and were come to the desert of Sinai, and had pitched in the wilderness; and there Israel camped before the mount.

Bible References

Camped

Acts 7:30
"After forty years had passed, an angel appeared to him in the wilderness of Mount Sinai, in the flame of a burning bush.
Galatians 4:24
This is allegorically speaking, for these women are two covenants. One is from Mount Sinai bearing children who are to be slaves; she is Hagar.