Do not judge, or you too will be judged. For in the same way you judge others, you will be judged, and with the measure you use, it will be measured to you.
Why do you look at the speck of sawdust in your brother’s eye and pay no attention to the plank in your own eye?
Matthew 7:1-3 (NIV)
The teaching about “not judging others” is a bit more nuanced than simply “don’t judge.”
If you ask God to judge between you and another, you’re putting yourself in a rather precarious position. You’d better be righteous.
Then Sarai said to Abram, “You are responsible for the wrong I am suffering. I put my slave in your arms, and now that she knows she is pregnant, she despises me. May the Lord judge between you and me.”
Genesis 16:5 (NIV)
Imagine a heavenly court whereby if you bring an accusation against someone and demand that the court determine who is at fault, the FIRST thing the court does is examine you, the accuser.
At any rate, we have a rule that if someone calls upon G-d to determine if concerning an accusation leveled against a fellow human being he or she had been correct, the first thing the heavenly tribunal does is to examine if the accuser has led a blameless life himself or herself.
Chizkuni on Genesis 16:5:4
And if they find you to be unrighteous or guilty of anything, the first thing they do is punish YOU for your sins. Only then will they address the accusation.
That is what the teaching is that informs us of this “do not judge” teaching. It is a warning.
If faults are found in the accuser’s life, he is judged, i.e. punished first, before the accusation is examined in greater detail.
Chizkuni on Genesis 16:5:4
In the case of Sarai, we want to blame her for lack of faith, or perhaps we want to apply a modern standard and accuse her of causing infidelity. But notice that God does not discipline her here.
But also, what is her accusation, exactly?
But Abram said, “Sovereign Lord, what can you give me since I remain childless and the one who will inherit my estate is Eliezer of Damascus?” And Abram said, “You have given me no children; so a servant in my household will be my heir.”
Genesis 15:2-3 (NIV)
The rabbis suggest that in Genesis 15, when Abram prayed for a child, he prayed only for himself and not for his wife. Remember: she was the one who was barren. She is the one who needed prayer.
She accuses him of being selfish in his prayer, and she is vindicated.
There are so many lessons to learn here, if we have the ears to hear.