King James Version
Wherefore henceforth know we no man after the flesh: yea, though we have known Christ after the flesh, yet now henceforth know we him no more.English Standard Version
From now on, therefore, we regard no one according to the flesh. Even though we once regarded Christ according to the flesh, we regard him thus no longer.New International Version
So from now on we regard no one from a worldly point of view. Though we once regarded Christ in this way, we do so no longer.