Strong's G5361 — φιλάδελφος (adjective)
philadelphos (fil-ad'-el-fos) adj.
1. fond of brethren, i.e. fraternal
[from G5384 and G80]
KJV: love as brethren 
Root(s): G5384, G80 
Hebrew root: ἀδελφός
Occurrences: 1