Charles Spurgeon Commentary John 20:8

"Then entered in therefore the other disciple also, who came first to the tomb, and he saw, and believed." — John 20:8 (ASV)

That is a great deal for John to be able to say concerning himself, for Mary had not yet believed. Possibly, Peter had scarcely believed, but John had. He felt certain that the Lord had risen. He remembered his words, and he correctly interpreted the fact now before him: he saw, and believed.