Ex 5:3, 7:16, 8:20, 27, 9:13, Jn 1:29,36, Acts 8:32, 2 Cor 5:21

Moses asked Pharaoh to send the Israelites into the wilderness to offer sacrifices to God. The sacrifice to be offered in the wilderness typifies Christ, the Lamb who will die for us. (Ex 3:18, Ex 5:3, Ex 7:16, Ex 8:20,27, Ex 9:13)

Ex 3:18 And they shall hearken to thy voice: and thou shalt come, thou and the elders of Israel, unto the king of Egypt, and ye shall say unto him, The Lord God of the Hebrews hath met with us: and now let us go, we beseech thee, three days' journey into the wilderness, that we may sacrifice to the Lord our God.

Ex 5:3 And they said, The God of the Hebrews hath met with us: let us go, we pray thee, three days' journey into the desert, and sacrifice unto the Lord our God; lest he fall upon us with pestilence, or with the sword.

Ex 7:16 And thou shalt say unto him, The Lord God of the Hebrews hath sent me unto thee, saying, Let my people go, that they may serve me in the wilderness: and, behold, hitherto thou wouldest not hear.

Ex 8:20 And the Lord said unto Moses, Rise up early in the morning, and stand before Pharaoh; lo, he cometh forth to the water; and say unto him, Thus saith the Lord, Let my people go, that they may serve me. 27 We will go three days' journey into the wilderness, and sacrifice to the Lord our God, as he shall command us.

Ex 9:13 And the Lord said unto Moses, Rise up early in the morning, and stand before Pharaoh, and say unto him, Thus saith the Lord God of the Hebrews, Let my people go, that they may serve me.

In the Old Testament it was foretold that Christ would be slain as a Lamb. (Acts 8:32)

Acts 8:32 The place of the scripture which he read was this, He was led as a sheep to the slaughter; and like a lamb dumb before his shearer, so opened he not his mouth:

Jesus is the Lamb of God who takes away the sin of the world. (John 1:29,36)

John 1:29 The next day John seeth Jesus coming unto him, and saith, Behold the Lamb of God, which taketh away the sin of the world. 36 And looking upon Jesus as he walked, he saith, Behold the Lamb of God!

God bore all our sins on Christ and made Him die for us. (2 Corinthians 5:21)

2 Corinthians 5:21 For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.