Jn 1:29, Mt 3:16-17, Jn 12:23, 27-28
In the Old Testament, the people of Israel offered sin offerings, burnt offerings, and peace offerings to God to please God. (Lev 9:22-24)
Lev 9:22 And Aaron lifted up his hand toward the people, and blessed them, and came down from offering of the sin offering, and the burnt offering, and peace offerings. 23 And Moses and Aaron went into the tabernacle of the congregation, and came out, and blessed the people: and the glory of the Lord appeared unto all the people. 24 And there came a fire out from before the Lord, and consumed upon the altar the burnt offering and the fat: which when all the people saw, they shouted, and fell on their faces.
Jesus is the Lamb of God who took away the sin of the world. (John 1:29)
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.
Jesus pleased God by dying on the cross for us as the Son of God. (Matthew 3:16-17, John 12:23, 27-28)
Matthew 3:16 And Jesus, when he was baptized, went up straightway out of the water: and, lo, the heavens were opened unto him, and he saw the Spirit of God descending like a dove, and lighting upon him: 17 And lo a voice from heaven, saying, This is my beloved Son, in whom I am well pleased.
John 12:23 And Jesus answered them, saying, The hour is come, that the Son of man should be glorified. 27 Now is my soul troubled; and what shall I say? Father, save me from this hour: but for this cause came I unto this hour. 28 Father, glorify thy name. Then came there a voice from heaven, saying, I have both glorified it, and will glorify it again.