From the early Church Fathers to now.
“Thy own friend, and thy father’s friend forsake not: and go not into thy brother’s house in the day of thy affliction. Better is a neighbour that is near, than a brother afar off.”
“Solomon says, "Better is a neighbor that is near than a brother far off." For this reason a person generally trusts himself to the good will of a friend rather than to the ties of relationship to his brother. So far does good will prevail that it often goes beyond the pledges given by nature.”
“Better is a neighbor close by, etc. It is better for you to have a neighbor who binds your soul with fraternal association than a brother who neglects to share common rights of faith and piety with you. The Lord clearly proved this in the parable of the wounded man by robbers, who was going down from Jerusalem to Jericho; and of the Samaritan, who took care of him.”
The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.