The truth is:
When it comes in spiritual things.
No person has the right to say what is right and wrong.
Because accordin to the Lord no one is good.
ROMANS 3:10-12
10 As it is written, There is none righteous, no, not one:
11 There is none that understandeth, there is none that seeketh after God.
12 They are all gone out of the way, they are together become unprofitable; there is none that doeth good, no, not one.
The false Prophets doesn't believe Romans 2:10-12.
They think highly of themselves, so they feel confident enough to say what is right and wrong.
But the chosen of God (real Prophets) who believe Romans 3:10-12.
So they only share the truth that the Lord Jesus revealed to them.
Paul & Bernabe just made a testimony and never said to the Jews who did not believe them that "You are wrong".
Instead they said to those who believe them "We are also men like you"
ACTS 14:1-4, 11-15
14 And it came to pass in Iconium, that they went both together into the synagogue of the Jews, and so spake, that a great multitude both of the Jews and also of the Greeks believed.
2 But the unbelieving Jews stirred up the Gentiles, and made their minds evil affected against the brethren.
3 Long time therefore abode they speaking boldly in the Lord, which gave testimony unto the word of his grace, and granted signs and wonders to be done by their hands.
4 But the multitude of the city was divided: and part held with the Jews, and part with the apostles.
11 And when the people saw what Paul had done, they lifted up their voices, saying in the speech of Lycaonia, The gods are come down to us in the likeness of men.
12 ;And they called Barnabas, Jupiter; and Paul, Mercurius, because he was the chief speaker.
13 Then the priest of Jupiter, which was before their city, brought oxen and garlands unto the gates, and would have done sacrifice with the people.
14 Which when the apostles, Barnabas and Paul, heard of, they rent their clothes, and ran in among the people, crying out,
15 And saying, Sirs, why do ye these things? We also are men of like passions with you, and preach unto you that ye should turn from these vanities unto the living God, which made heaven, and earth, and the sea, and all things that are therein: