26. Let them say, then, wherein they think that there is an unlikeness in the divine operation. Since as to know the Father and the Son is life, as the Lord Himself declared, saying: “This is life eternal to know Thee the only true God, and Jesus Christ, Whom Thou hast sent,” S. John xvii. 3. so, too, to know the Holy Spirit is life. For the Lord said: “If ye love Me, keep My commandments, and I will ask the Father and He shall give you another Paraclete, that He may abide with you for ever, even the Spirit of Truth, Whom the world cannot receive, because it seeth Him not, neither knoweth Him, but ye know Him, for He is with you, and in you.” S. John xvii. 14, 15.