Jesus doesn’t put up with sibling rivalry between sisters and brothers in the family of God. The New Testament is full of examples of Christians getting after each other, back biting, and being all around jerks… and yet the call to unity, reconciliation, devotion to and honoring of someone else… these are key themes in the gospel. And — get this — it’s the first thing Paul says after telling us to overcome evil.
Sibling rivalry is evil. It’s of the enemy. It’s not the good.
Cling to what is good: love one another.