Then went in also that other disciple, which came first to the sepulchre, and he saw, and believed.
Then went in also that (or 'the') other disciple which came first to the sepulchre. The repetition of this, in connection with his not having gone in until after Peter, seems to show that at the moment of penning these words the advantage which each of these loving disciples had of the other was present to his mind.
And he saw and believed. Probably he means, though he does not say, that Ha believed in his Lord's resurrection more immediately and certainly than Peter.