A.T. Robertson Commentary Ephesians 4:32

"and be ye kind one to another, tenderhearted, forgiving each other, even as God also in Christ forgave you." — Ephesians 4:32 (ASV)

Be ye kind to one another (γινεσθε εις αλληλους χρηστο). Present middle imperative of γινομα, "keep on becoming kind (χρηστος, used of God in Ro 2:4) toward one another." See Col 3:12f.

Tenderhearted (ευσπλαγχνο). Late word (ευ, σπλαγχνα) once in Hippocrates, in LXX, here and 1 Peter 3:8 in N.T.