Albert Barnes' Notes on the Whole Bible - John 14:12
He that believeth on me - This promise had doubtless special reference to the apostles themselves. They were full of grief at his departure, and Jesus, in order to console them, directed them to the great honor which was to be conferred on them, and to the assurance that God would not leave them, but would attend them in their ministry with the demonstrations of his mighty power. It cannot be understood of all his followers, for the circumstances of the promise do not require us to understand... read more
The Pulpit Commentary - John 14:12-15
(b) The greater works , and their conditions and issues , He offers a fresh ground of consolation, based on the double consideration, first of his departure from them and abiding presence with them, and then on the reflex effect on their own faith and on the world of their consciousness of union with him. He throws the arms of his love round about, not only the eleven disciples, but all believers on him, and in a sense draws them up into his own Divinity. With these words must be... read more