A.T. Robertson Commentary Romans 16:19

"For your obedience is come abroad unto all men. I rejoice therefore over you: but I would have you wise unto that which is good, and simple unto that which is evil." — Romans 16:19 (ASV)

Is come abroad (αφικετο). Second aorist middle indicative of αφικνεομα, old verb, to come from, then to arrive at, only here in N.T.

Over you (εφ' υμιν). "Upon you." Simple unto that which is evil (ακεραιους εις το κακον). Old adjective from α privative and κεραννυμ, to mix. Unmixed with evil, unadulterated.