A.T. Robertson Commentary Romans 12:10

"In love of the brethren be tenderly affectioned one to another; in honor preferring one another;" — Romans 12:10 (ASV)

In love of the brethren (τη φιλαδελφια). Late word for brotherly love for which see 1 Thessalonians 4:9.

Tenderly affectioned (φιλοστοργο). Old compound adjective from φιλος and στοργη (mutual love of parents and children), here alone in N.T.