14 Bible Verses about Criticism, amongst believers

Do not complain of one another, brothers, or you will be judged. The judge is standing right at the door!

"Pass no more judgments upon other people, so that you may not have judgment passed upon you. For you will be judged by the standard you judge by, and men will pay you back with the same measure you have used with them. Why do you keep looking at the speck in your brother's eye, and pay no attention to the beam that is in your own?read more.
How can you say to your brother, 'Just let me get that speck out of your eye,' when all the time there is a beam in your own? You hypocrite! First get the beam out of your own eye, and then you can see to get the speck out of your brother's eye.

Do not judge others, and they will not judge you. Do not condemn them, and they will not condemn you. Excuse others and they will excuse you. Give, and they will give to you; good measure, pressed down, shaken together, and running over, they will pour into your lap. For the measure you use with others they in turn will use with you." And he used a figure saying, "Can one blind man lead another? Will they not both fall into a hole?read more.
A pupil is not better than his teacher, but every pupil when he is fully trained will be like his teacher. Why do you keep looking at the speck in your brother's eye, and pay no attention to the beam that is in your own? How can you say to your brother, 'Brother, just let me get that speck out of your eye,' when you cannot see the beam in your own eye? You hypocrite! First get the beam out of your own eye, and then you can see to get out the speck in your brother's eye.

Treat people who are overscrupulous in their faith like brothers; do not criticize their views. One man's faith allows him to eat anything, while the overscrupulous man eats nothing but vegetables. The man who will eat anything must not look down on the man who abstains from some things, and the man who abstains from them must not criticize the one who does not, for God has accepted him.read more.
Who are you to criticize someone else's servant? It is for his own master to say whether he succeeds or fails; and he will succeed, for the Master can make him do so.

You must not grumble, as some of them did, for they were destroyed for it by the destroying angel.

But if you bite one another and eat one another, take care, or you will be destroyed by one another.

Do everything without any grumbling or disputing, so that you will be blameless and honest, faultless children of God in the midst of a crooked and perverted age, in which you appear like stars in a dark world, offering men the message of life. Then I will have reason to boast of you on the Day of Christ, because my exertion and labor have not been wasted.

Do not talk against one another, brothers. Whoever talks against a brother or condemns his brother talks against the Law, and condemns the Law. But if you condemn the Law you are not an observer of the Law but its judge. There is only one lawgiver and judge??e who has the power to save and to destroy; who are you, to judge your neighbor?

Now further, what is always demanded of managers is that they can be depended on. I for my part care very little about being examined by you or by any human court. I do not even offer myself for investigation. For while my conscience does not trouble me at all, that does not prove that I am innocent. It is the Lord who must examine me.read more.
Do not form any premature judgments, therefore, but wait until the Lord comes back. For he will light up the darkness that now hides things and show what the motives in people's minds are, and then everyone will get from God the praise he deserves.

So no one can call you to account for what you eat or drink, or do about annual or monthly feasts or Sabbaths. That was all only the shadow of something that was to follow; the reality is found in Christ. No one can put you in the wrong by persisting in studied humility and the worship of angels, being absorbed in the visions he has seen, and groundlessly conceited over his mere human mind.

"But if your brother wrongs you go to him and show him his fault while you are alone with him. If he listens to you, you have won back your brother.

I mean to have no one able to find any fault with the way I handle this munificence. I intend to do what is right not only in the Lord's sight but in the eyes of men.

In every way set them an example of good conduct yourself. Teach with sincerity and seriousness, and present a wholesome, unobjectionable message, so that your opponent may be put to shame at finding nothing bad to say about us.

"Why, then," you will ask, "does he still find fault? For who can resist his will?" On the contrary, who are you, my friend, to answer back to God? Can something a man shapes say to the man who shaped it, "Why did you make me like this?" Has not the potter with his clay the right to make from the same lump one thing for exalted uses and another for menial ones?