In the third month, when the children of Israel were gone forth out of the land of Egypt, the same day came they into the wilderness of Sinai.
All Commentaries on Exodus 19:1 Go To Exodus 19
Augustine of Hippo
AD 430
The Pentecost too we observe, that is, the fiftieth day from the passion and resurrection of the Lord, for on that day he sent to us the Holy Paraclete whom he had promised. This was prefigured in the Jewish Passover, for on the fiftieth day after the slaying of the lamb, Moses on the mount received the law written with the finger of God. Against Faustus, a Manichaean