'Harmful' in the Bible

Love never does anything that is harmful to its neighbor. Therefore, love is the fulfillment of the Law.

But people who want to get rich keep toppling into temptation and are trapped by many stupid and harmful desires that plunge them into destruction and ruin.

Continue to follow and be submissive to your leaders, since they are watching over your souls as those who will have to give a word of explanation. By doing this, you will be letting them carry out their duties joyfully, and not with grief, for that would be harmful for you.