Galatians 5:13-14

13For you, my brothers, were called to freedom; only do not let your freedom become an opportunity for the sinful nature (worldliness, selfishness), but through love serve and seek the best for one another.

14For the whole Law [concerning human relationships] is fulfilled in one precept, “You shall love your neighbor as yourself [that is, you shall have an unselfish concern for others and do things for their benefit].”