John 8:12
12Again, therefore, Jesus spoke to them, saying, “I am the light of the world. He who follows me will not walk in the darkness, but will have the light of life.”
I am: another of the festival’s great claims. Light of the world is as wide as the darkness. Wesley: whoever follows closely, humbly, steadily shall in nowise walk in ignorance, wickedness, misery, but have divine light diffusing knowledge, holiness, joy unto everlasting life.
The accent falls on a sincere universal offer with a genuine condition: follow. Prevenient grace makes following possible; remaining in darkness is not lack of a lamp but refusal to walk after him. “He who” is not a trick word.
Calvin: we are all blind by nature; a remedy is offered. He is light of the whole world—Jew and Gentile, learned and ignorant—yet out of Christ there is not a spark of true light. He stretches out his hand, as it were, and draws followers; the promise is that they shall not walk in darkness even to life.
The invitation is world-wide; sight is Christ’s gift. Following is not a native skill of the blind; the Light both summons and illumines those who walk in him.
Key contrast Both preach a world-darkness and a Christ who truly shines. Arminians take “he who follows” as a genuine, grace-enabled call anyone may heed or refuse. Calvinists read the same words as an earnest promise to followers, while holding that the blind do not follow unless the Light draws them.