Compara traducciones versículo por versículo
But this knowledge is not in everyone. But some, being accustomed until now to the idol, eat this food as food sacrificed to idols, and their conscience, because it is weak, is defiled.
Mas no en todos hay esta ciencia: porque algunos con conciencia del ídolo hasta aquí, comen como sacrificado á ídolos; y su conciencia, siendo flaca, es contaminada.
Howbeit there is not in every man that knowledge: for some with conscience of the idol unto this hour eat it as a thing offered unto an idol; and their conscience being weak is defiled.
However, that knowledge isn’t in all men. But some, with consciousness of an idol until now, eat as of a thing sacrificed to an idol, and their conscience, being weak, is defiled.