24 At a lodging place on the way, the Lord met Moses[1] and was about to kill him. 25 But Zipporah took a flint knife, cut off her son's foreskin and touched Moses' feet with it.[2] "Surely you are a bridegroom of blood to me," she said. 26 So the Lord let him alone. (At that time she said "bridegroom of blood," referring to circumcision.) 27 The Lord said to Aaron, "Go into the wilderness to meet Moses." So he met Moses at the mountain of God and kissed him. 28 Then Moses told Aaron everything the Lord had sent him to say, and also about all the signs he had commanded him to perform. 29 Moses and Aaron brought together all the elders of the Israelites, 30 and Aaron told them everything the Lord had said to Moses. He also performed the signs before the people, 31 and they believed. And when they heard that the Lord was concerned about them and had seen their misery, they bowed down and worshiped.

Matthew Henry's Commentary on Exodus 4:24-31

Commentary on Exodus 4:24-31

(Read Exodus 4:24-31)

God met Moses in anger. The Lord threatened him with death or sent sickness upon him, as the punishment of his having neglected to circumcise his son. When God discovers to us what is amiss in our lives, we must give all diligence to amend it speedily. This is the voice of every rod; it calls us to return to Him that smites us. God sent Aaron to meet Moses. The more they saw of God's bringing them together, the more pleasant their interview was. The elders of Israel met them in faith, and were ready to obey them. It often happens, that less difficulty is found than was expected, in such undertakings as are according to the will of God, and for his glory. Let us but arise and try at our proper work, the Lord will be with us and prosper us. If Israel welcomed the tidings of their deliverance, and worshipped the Lord, how should we welcome the glad tidings of redemption, embrace it in faith, and adore the Redeemer!