What does the Bible say about strife between believers?

The issue of strife between believers is addressed in the story of Abram and Lot in Genesis 13. Despite being fellow believers, they experienced conflict due to their wealth, leading to strife between their herdsmen. Abram recognized the damaging potential of such division, especially in the presence of those who do not know God, stating, 'Let there be no strife, I pray thee, between me and thee, for we be brethren' (Genesis 13:8). This reflects a biblical principle that believers should prioritize unity and peace over material concerns.