How do Catholic, Baptist and Pentecostal denominations justify following teachers?

How does the Catholic, Baptist and Pentecostal denominations justify the practice of following teachers given this in scripture? > "But the anointing which you have received from Him abides in you, and > you do not need that anyone teach you; but as the same anointing > teaches you concerning all things, and is true, and is not a lie, and > just as it has taught you, you will abide in Him.", 1 Jn 2:27 and, this > "No longer will each one teach his neighbor or his brother, saying, > ‘Know the Lord,’ because they will all know Me, from the least of them > to the greatest.", Heb 8:11 Obviously, they are appointed in the Church: > "And God has placed in the church first of all apostles, second > prophets, **third teachers**, then miracles, then gifts of healing, of > helping, of guidance, and of different kinds of tongues.", 1 Cor 12:28 Then, apparently "you" should be teachers at some point, > "by this time you ought to be teachers", Heb 5:12 Then, there's 1 Jn 2:27 and Heb 8:11 . If you back up to Heb 8:10, this is largely acknowledged as the New Covenant where the Holy Spirit is given to dwell within believers transforming their nature to keep God's ways: > "This is the covenant I will establish with the people of Israel after > that time, declares the Lord. I will put my laws in their minds and > write them on their hearts. I will be their God, and they will be my > people.", Heb 8:10 That appears to be the anointing in v11. And, that anointing says you have no need of a teacher. So, why do the denominations justify their followers remaining under teachers, most their entire lives in the church? Here's a New Testament example of how to conduct "When you come together": 1 Cor 14:26-39, and some points: > "**everyone has** a psalm or **a teaching**, **a revelation**, a tongue, **or an interpretation**.", v26 > "Two or three prophets should speak the others should weigh carefully > what is said. **And if a revelation comes** to someone who is seated, the > first speaker should stop", v29-30 >**For you can all prophesy** in turn so that everyone may be instructed and encouraged", v31 > "If anyone considers himself a prophet or spiritual person, let him > acknowledge that **what I am writing you is the Lord’s command**.", v37 The above is quite different from conventional church services.