John 1:29
29The next day, he saw Jesus coming to him, and said, “Behold, the Lamb of God, who takes away the sin of the world!
Behold the Lamb—innocent, to be offered, Isaiah’s Servant, Passover and daily sacrifice in one Person. Wesley: he atones for all the sins of all mankind; sin and the world are of equal extent. What comes through is a worldwide provision, sincerely offered.
“Takes away” is for sinners who look. The Baptist does not shrink the world to a hidden list. The Lamb is God’s gift; receiving him (1:12) is how the taking-away is personally known. No one is told they were never in view.
Behold the Lamb of God. Calvin: the principal office is stated—he takes away the sins of the world by the sacrifice of his death and reconciles men to God. Other favors depend on this chief one.
The world is the ruined human race in need of an atonement, not a mere possibility. The Lamb actually bears and blots out sin. Those who come by faith find nothing to hinder reconciliation; the efficacy is in his death, not in our adding to it.
Key contrast Arminians, with Wesley, take “the world” as all mankind—atonement coextensive with the sin it names; the Reformed stress that the Lamb’s death actually takes sin away and reconciles, applied to those who are brought to him by faith, not a mere general possibility left idle.