What does the Bible say about not condemning others?

In John 8, the passage recounts how the Pharisees brought a woman caught in adultery before Jesus to test Him. Jesus pointed out that those without sin should cast the first stone, leading to the accusers' own conviction and departure. This illustrates the principle found in Romans 2:1-3, where it states that when we judge others, we are condemning ourselves as we often commit the same transgressions. As believers, we are called to show mercy, remembering that we, too, are sinners saved by grace, and therefore should not accuse others but instead support one another in love and humility.