There is no shortage of scriptures telling us that we must love our brother. Yahushua commanded it:| EliYah Ministries
This page contains a list of studies showing the New Testament teaches Torah/Law observance.| EliYah Ministries
The sheer number of scriptures that tell us to love our brother indicate the importance of it. Below I have done a mini-study that discusses this subject along with other issues that deal with loving our brother:| EliYah Ministries