“¶ The next day, Iohn seeth Iesus comming vnto him, and saith, Behold the Lambe of God, which taketh away the sinne of the world.”
1611 King James Version (KJV)
1:29 He seeth Jesus coming and saith, Behold the Lamb - Innocent; to be offered up; prophesied of by Isaiah, #Isa 53:7|, typified by the paschal lamb, and by the daily sacrifice: The Lamb of God - Whom God gave, approves, accepts of; who taketh away - Atoneth for; the sin - That is, all the sins: of the world - Of all mankind. Sin and the world are of equal extent.
Joh 1:29 The next day John seeth Jesus. Here Jesus first appears, in person, in John's account, who omits all the details given by Matthew and Luke of his earlier life. He was now thirty years old, and came from Galilee to Jordan to be baptized of John. This interview was after the baptism (Joh 1:33), and probably after the Temptation. Behold the Lamb of God. Innocent like the lamb, to be offered as a lamb, "led as a lamb to the slaughter" (Isa 53:7). The lamb was commonly used as a sin offering (Le 4:32), and when John points to Jesus as "the" Lamb of God he can only mean that God had provided him as a sacrificial offering. The sin of the world. Not of Jews only, but of Gentiles. John points to Jesus as the world's Savior.