Tertullian

“ I do not honour Saturnus if I call a man so, by his own name. I honour him no more than I do Marcus, if I call a man Marcus. But it says, “Make not mention of the name of other gods, neither be it heard from thy mouth.” [4] The precept it gives is this, that we do not call them gods. For in the first part of the law, too, “Thou shalt not,” saith He, “use the name of the Lord thy God in a vain thing,” [5] that is, in an idol. [6] Whoever, therefore, honours an idol with the name of God, has fallen into idolatry. ”

“ But, however, since the conduct according to the divine rule is imperilled, not merely by deeds, but likewise by words, (for, just as it is written, “Behold the man and his deeds;” [1] so, “Out of thy own mouth shalt thou be justified” [2] ) , we ought to remember that, even in words, also the inroad of idolatry must be foreguarded against, either from the defect of custom or of timidity. ”