From St Thomas's Commentary on St John

Extract

'These things I have spoken to you, abiding with you. But the Paraclete, the Holy Ghost whom the Father will send in my name, he will teach you all things and bring all things to your mind, whatsoever I shall have said to you.'—John, 14, 26.

In this passage our Lord promises the disciples understanding of his teaching, through the Holy Spirit whom he is soon to give them, saying, 'But the Paraclete . . . will teach you all things'.

Three points are made about the Holy Spirit. Our Lord first describes the Spirit, secondly his mission, thirdly his effect. Our Lord further describes the Holy Spirit himself in many ways, as the Paraclete, a Spirit and Holy.