Evangelii Gaudium §195

195. When Saint Paul approached the apostles in Jerusalem to discern whether he was “running or had run in vain” (Gal 2:2), the key criterion of authenticity which they presented was that he should not forget the poor (cf. Gal 2:10). This important principle, namely that the Pauline communities should not succumb to the self-centred lifestyle of the pagans, remains timely today, when a new self-centred paganism is growing. We may not always be able to reflect adequately the beauty of the Gospel, but there is one sign which we should never lack: the option for those who are least, those whom society discards.