Moses is identified by Scripture as a Messiah type:
In Exo 1:22, Moses, even though as yet unborn, was given a death sentence.
In Exo 2:2, Moses was hidden away unseen for three months.
In Exo 2:6-10, Moses was miraculously raised up to life.
Here we have a clear prophetic picture of the death, burial, and resurrection of Messiah, who was born to be the Deliverer of Israel!
“I am come down to deliver them out of the hand of the Egyptians,” Exo 3:8
The last time YHVH said He is come down was in triennial vayhee chal haaretz, in Gen 11:5. Man was trying to establish his own way to come up to God, disregarding His command, but God came down to man. And now, when His people are enslaved in the kingdom of Egypt, a prophetic type for the kingdom of darkness, He is come down to deliver them, who knows their pain (Exo 3:7, see Phi 2:5-8).
‘YHVH, the God of the Hebrews, has met with us: and now let us go, we pray you, three days’ journey into the wilderness, that we may sacrifice to YHVH our God;’ Exo 3:18
Three is a sign of Messiah in Torah. It is a journey of three days from slavery in the kingdom to Egypt to freedom to worship God; a prophetic type of Messiah’s journey of three days from death on a cross to resurrection life, by which we leave the kingdom of darkness and are reborn with new life, in freedom to worship God, no longer a slave to sin.
So they said, “The God of the Hebrews has met with us. Please, let us go three days’ journey into the desert and sacrifice to the LORD our God, lest He fall upon us with pestilence or with the sword.” Exo 5:3
Three is a sign of the Messiah! The Scripture is here preaching the Gospel of grace: without a (substitutionary) Sacrifice (to cover our sins), we are subject to wrath. But when we answer the call of God to depart the kingdom of darkness and come to Him, the Sacrifice which has been made to the LORD applies, and we are no longer subject to wrath.