And I knew him not: but he that sent me to baptize with water, the same said unto me,
Upon whom you shall see the Spirit descending, and remaining on him, the same is he who baptizes with the Holy Spirit.
Read Chapter 1
Augustine of Hippo
AD 430
We have arrived, as the Lord has willed it, to the day of our promise. He will grant this also, that we may arrive at the fulfillment of the promise. For then those things which we say, if they are useful to us and to you, are from Him; but those things which proceed from man are false, as our Lord Jesus Christ Himself has said, He that speaks a lie speaks of his own. John 8:44 No one has anything of his own except falsehood and sin. But if man has any truth and justice, it is from that fountain after which we ought to thirst in this desert, so that being, as it were, bedewed by some drops from it, and comforted in the meantime in this pilgrimage, we may not fail by the way, but reach His rest and satisfying fullness. If then he that speaks a lie speaks of his own, he who speaks the truth speaks of God. John is true, Christ is the Truth; John is true, but every true man is true from the Truth. If, then, John is true, and a man cannot be true except from the Truth, from whom was he true...
And I knew Him not, &c With water. Nonnus, "in the laver without fire and the Holy Ghost." A second time S. John declares that he knew not Jesus was the Christ by sight and converse, but by revelation from God, that no one might dare to dispute his testimony. So S. Cyril.
Note the expression abiding. From this it is clear that it is peculiar to Christ to have all the graces of the Holy Spirit, and prophecy, by way of habit; but that in others only those gifts abide which are necessary for holiness of life: according to the words in chap. xiv, "He shall abide with you." (See Suarez, Tract. de fide. disp8 , sect6 , n6.)