John the Apostle
1 John 2:27ESV·traditional attribution

But the anointing that you received from him abides in you, and you have no need that anyone should teach you. But as his anointing teaches you about everything, and is true, and is no lie—just as it has taught you, abide in him.

John Calvin Reformed @genevareformer

27 And ye need not Strange must have been the purpose of John, as I have already said, if he intended to represent teaching as useless. He did not ascribe to them so much wisdom, as to deny that they were the scholars of Christ.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. The apostle encourages the disciples (to whom he writes) in these dangerous times, in this hour of seducers; he encourages them in the assurance of their stability in this day of apostasy: But you have an unction from the Holy One, and you know all things. We see, 1. The blessing wherewith they were enriched - an unguent from heaven: You have an unction.

Commenting on 1 John 2:20-27

John Gill Reformed Baptist @doctorgill

But the anointing which ye have received of him,.... The Spirit, and the grace of the Spirit, which they had received out of the fulness of grace which is in Christ; and is compared to oil or ointment; See Gill on Jo1 2:20; for Christ, the anointed, is the fountain of it all, and it is had from him in a way of giving and receiving.