As a result, you have no need that anyone should teach you, since from the anointing you know everything you need to know for obtaining salvation and for being guarded from false teachers.
This does not mean that all believers, the whole community, or the whole Church should not themselves learn and teach the truths of faith by those ways and means through which instruction in the truths of faith is usually accomplished.
The apostle speaks of the whole Church according to her essence or idea, in her general relation to her understanding and knowledge of the faith of Christ.
His words must not be understood in relation to each member of the Church separately. There are children in her who need instruction, children both in age and in knowledge, who require guidance, admonition, and teaching.
There are also the weak and those not strong in understanding and knowledge, who require spiritual edification, strengthening, and instruction. There are needs and requirements for knowledge and instruction among children, young men, little children, and fathers; 1 Jn 2:12-14 and note.
For all this there are, and must be, fathers, teachers, educators, and spiritual physicians in the Church. Yet in general, and in essence, the Church of Christ possesses so much saving knowledge and so many saving means of knowing the faith that she can have no need of any other teaching.
Nor does she have any need of any other teachers who would undertake to teach something different, something not in accord with the apostolic teaching preserved in the Church, or to correct or alter anything in it.
“This very anointing teaches you concerning all things.” It does so as an active and creative power, or more precisely, as the source of this power. The notion of anointing is obviously personified, and the action is attributed to the one who acts.
Briefly stated, the Holy Spirit teaches believers. He symbolically pours out His gifts upon believers and thus teaches them all things, guiding them into all truth; cf. Jn 15:15; Jn 16:12-13 and notes.
The Lord Himself told His disciples that He had said all things to them, that is, the whole will of God concerning the great work for which He came to earth.
The Spirit of truth promised by Him was to guide them into all truth, or, what is the same, to teach them all things.
“And it is true and is not a lie.” That is, the anointing itself is true and is not a lie. So, of course, is the teaching that it teaches. Therefore true and without falsehood is also the Comforter, the Spirit, who grants or communicates this anointing to believers.
“Abide in it.” If it teaches all things, if it is true and is not a lie, and if therefore its teaching is divine teaching, then abide in it.
That is, keep it in your heart and make it fruitful by living faith. Be constant, firm, and unshaken in this teaching. Do not yield to any deceptions and false teachings.
“Therefore, if you firmly preserve within yourselves the Holy Spirit whom you received, you have no need that anyone should teach you. But as this very Spirit teaches you all things, abide in what He has taught you, for what He has taught you is true and not false” (Theophylact).
Thus the action toward believers which the apostle here calls anointing, teaching and confirming believers from within, is the creative action of the entire Most Holy Trinity.
For in Christ and the apostles it is attributed to the Father, to the Son, and to the Holy Spirit. This is clear from the cited words in the Gospel of John and in the passage under consideration.
It is expressed briefly and characteristically in these words of the holy Apostle Paul: “He who establishes us with you in Christ and has anointed us is God” the Father, “who also sealed us and gave the earnest of the Spirit in our hearts” (2 Cor 1:21-22).
If those who have received the anointing from the Father, the Son, and the Holy Spirit are God’s anointed ones, then those who are not anointed are not God’s, but antichrists.
“Therefore,” more precisely, as also in the Slavonic translation, “and now.” In this last time, when many antichrists, deceivers or false teachers, have appeared in the world (verse 18), it is especially necessary to care for your confirmation in the teaching you received in the anointing.
Therefore abide in Christ with His teaching and in the fulfillment of His commandments. Abide in communion with Him (verse 24).
“Having spoken about the appearance of antichrists, and that all their teaching is corrupt, and having sufficiently persuaded the faithful to hold unchangeably the teaching in which they were instructed, the apostle then mentions the reward appointed for this.
By the brightness of the reward, as it were, he strengthens them still more and says: abide in Him. Why? So that, when He appears, we may have boldness before Him.
For what can be more glorious or desirable than boldness? That is, when we reveal our labors in the present life, we may do so with boldness and without any shame at His coming” (Theophylact).