46 The articular πονηρός (ponēros, “the evildoer”) cannot be translated simply as “evil” for then the command would be “do not resist evil.” Every instance of this construction in Matthew is most likely personified, referring either to an evildoer (13:49) or, more often, “the evil one” (as in 5:37; 6:13; 13:19, 38).
47 Many (B D K L Δ Θ f13 565 579 700 1424 ) have σου (sou) here (“your right cheek”), but many others lack the pronoun (א W f1 33 892 1241 ). The pronoun was probably added by way of clarification. has σου in brackets, indicating doubt as to its authenticity.

In other versions

But I say to you, Do not resist the one who is evil. But if anyone slaps you on the right cheek, turn to him the other also.

But I tell you, do not resist an evil person. If anyone slaps you on the right cheek, turn to them the other cheek also.

But I tell you, don’t resist an evildoer. On the contrary, if anyone slaps you on your right cheek, turn the other to him also.

But I say, do not resist an evil person! If someone slaps you on the right cheek, offer the other cheek also.

But I say to you, do not resist the evildoer, but whoever strikes you on the right cheek, turn the other to him also.

But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.

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