Jesus teaches about Judging others in Bible Matthew 7:1-5 "Do not judge others, so that God will not judge you, for God will judge you in the same way as you judge others, and he will apply to your the same rules you apply to others. Why, then, do you look at the speck in your brother's eye, and pay no attention to the log in your own eye? You hypocrite! First take the log out of your own eye, and then you will be able to see clearly to take the speck out of your brother's eye. Matthew 7:1-5
We try to judge others based on few things which impact us not knowing the exact facts. Hence it is best for us humans to not judge others. We all sin (haven't you said a single lie? I have all of us have at least for fun) so no one is perfect to judge another. How can an accused judge another accused? hence a person who judge another is found more punishable before the eternal Living God. The Creator God is the perfect Jude who will judge each one of us.
So let's try to obey & live to the requirements of the Living God. To know more, read the Bible starting from Genesis, you will know who is God and what He needs of you. Remember before you start to read the Bible please pray God to help you understand the Lords words because Bible cannot be understood just as it is written. The Bible is written with the Lords wisdom hence we need His help to understand properly.
So let's not judge others lest we will be judged with the same measures that we use on others by the Living God.