1And when I came to you, brethren, I did not come with superiority of
speech or  of wisdom, proclaiming to you the testimony of God.  2For I
determined to know nothing among you except Jesus Christ, and Him
crucified.   3And I was with you in weakness and in fear and in much
trembling.  4And my message and my preaching were not in persuasive
words of wisdom, but in demonstration of the Spirit and of power, 5that
your faith should not rest on the wisdom of men, but on the power of
God (1 Corinthians 2:1-5; NASB).

6But even if I am unskilled in speech, yet I am not so in knowledge; in
fact, in every way we have made this evident to you in all things (2
Corinthians 11:6; NASB).

13And for this reason we also thank God that when you received from us
the word of God's message, you accepted it not as the word of men, but
for what it really is, the word of God, which also performs its work in you
who believe (1 Thessalonians 2:13; NASB).

13Until I come keep on attending to the reading, to the exhortation,  to
the teaching. 14Not neglect the in you grace-gift, which was given to you
through prophecy with laying on of the hands of the elders.  15These
things keep on attending to, in these things keep on being, in order that
of you the advance clear might be to all. 16Give attention to yourself and
to the teaching,  keep on remaining in them;  this for doing both yourself
you shall deliver and the ones hearing you (1 Timothy 4:13-16; my word
for word translation from the Greek text).

15Be diligent to present yourself approved to God, as a workman who
does not need to be ashamed, handling accurately the word of truth (2
Timothy 2:15; NASB).

24And the Lord’s bond-servant must not be quarrelsome, but be kind to
all, able to teach, patient when wronged, 25with gentleness correcting
those who are in opposition, if perhaps God may grant them repentance
leading to the knowledge of the truth, 26and they may come to their
senses and escape from the snare of the devil, having been held captive
by him to do his will (2 Timothy 2:24-26; NASB).

1I solemnly charge you in the presence of God and of Christ Jesus, who is
to judge the living and the dead, and by His appearing and His
kingdom: 2preach the word; be ready in season and out of season;
reprove, rebuke, exhort, with great patience and instruction.  3For the
time will come when they will not endure sound doctrine; but wanting to
have their ears tickled, they will accumulate for themselves teachers in
accordance to their own desires; 4and will turn away their ears from the
truth, and will turn aside to myths. 5But you, be sober in all things,
endure hardship, do the work of an evangelist, fulfill your ministry (2
Timothy 4:1-5; NASB).

9Holding fast the faithful word which is in accordance with the teaching,
that he may be able both to exhort in sound doctrine and to refute those
who contradict (Titus 1:9; NASB).