1 John 2:10-11

10 "He who says he is in the light and hates his brother is in the darkness still. He who loves his brother abides in the light, and in it there is no cause for stumbling. 11 But he who hates his brother is in the darkness, and does not know where he is going, because the darkness has blinded his eyes."

Explained:  He will be no scandal, no stumbling-block, to his brother; he will conscientiously beware that he neither induce his brother to sin nor turn him out of the way of religion, Christian love teaches us highly to value our brother's soul, and to dread every thing that will be injurious to his innocence and peace.