Who are you to judge someone else's servant? To his own master he stands or falls. And he will stand, for the Lord is able to make him stand. Romans 14:4

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. Matthew 7:1-2

You, therefore, have no excuse, you who pass judgment on someone else, for at whatever point you judge the other, you are condemning yourself, because you who pass judgment do the same things. Romans 2:1

Do not show partiality in judging; hear both small and great alike. Do not be afraid of any man, for judgment belongs to God. Deuteronomy 1:17