The Catechism in Questions & Answers

291. What does this “love for one another” produce in the congregation?

“Love for one another” enables us to accept our brother and sister as they are (cf. Romans 15: 7), and protects against irreconcilability, prejudices, and contempt. It is a power that strengthens the cohesion in the congregation, awakens empathy and understanding for one another, and promotes willingness to help one another.

From the “high song of love”: “Love suffers long and is kind; love does not envy; love does not parade itself, is not puffed up; does not behave rudely, does not seek its own, is not provoked, thinks no evil; does not rejoice in iniquity, but rejoices in the truth; bears all things, believes all things, hopes all things, endures all things.”
1 Corinthians 13: 4-7