I will give you my interpretation of the passage you mention. From the KJV it comes from Matthew chapter 7:1-2
- Judge not, that ye be not judged.
- For with what judgment ye judge, ye shall be judged: and with what measure ye mete, it shall be measured to you again.
I see this as a pragmatic expectation when a person is judging others. We see that it is more of a pragmatic earthy expectation than an escape from judgment.
Note Hebrews 9:27, “And as it is appointed unto men once to die, but after this the judgment:”
So it is clear that not judging others will not save you from judgment from God. (Actually judgment from the word of God, but that is a deeper conversation.)
Now look at the verse preceding Matthew chapter 7:
Matt 6:34, “Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day is the evil thereof.” This is a pragmatic fact of living in this world.
So, as I see Matt 7:1-2, no one should be surprised that if they judge another, that they get judged by the other, or anyone who knows you judged another. It is sort of the old saying, “What goes around, comes around.”