For you were called to freedom brothers and sisters; only do not use your freedom as an opportunity for self-indulgence, but through love become slaves to one another. (NRSV)
This by far is one of my favorite Bible verses. It always reminds me of my own selfishness and really reminds me how starkly Biblical wisdom contrasts the practice of the majority of Christians.
I want to write so much more, but I will refrain. The verse is an impecable reminder to us and needs no further commentary from me. The paragraph above concludes cynically, but please remember that the verse urges us with hope.