From Galatians 6:1-2:
Brethren, even if anyone is caught in any trespass, you who are spiritual, restore such a one in a spirit of gentleness; each one looking to yourself, so that you too will not be tempted. Bear one another’s burdens, and thereby fulfill the law of Christ.
From The Prophet by Kahlil Gibran:
And when one of you falls down he falls for those behind him, a caution against the stumbling stone. Ay, and he falls for those ahead of him, who though faster and surer of foot, yet removed not the stumbling stone… The righteous is not innocent of the deeds of the wicked.