Mark 8:38

(Vict. Ant. e Cat. in Marc.) He then who has learned this, is bound zealously to confess Christ without shame. And this generation is called adulterous, because it has left God the true Bridegroom of the soul, and has refused to follow the doctrine of Christ, but has prostrated itself to the devil and taken up the seeds of impiety, for which reason also it is called sinful. Whosoever therefore amongst them has denied the kingdom of Christ, and the words of God revealed in the Gospel, shall receive a reward befitting His impiety, when He hears in the second advent, I know you not. (Matt. 7:23)

(Hom. 32. in Evang.) There are however some, who confess Christ, because they see that all men are Christians; for if the name of Christ were not at this day in such great glory, the Holy Church would not have so many professors. The voice of profession therefore is not sufficient for a trial of faith whilst the profession of the generality defends it from shame. In the time of peace therefore there is another way, by which we may be known to ourselves. We are ever fearful of being despised by our neighbours, we think it shame to bear injurious words; if perchance we have quarrelled with our neighbour, we blush to be the first to give satisfaction; for our carnal heart, in seeking the glory of this life, disdains humility.

But we are often hindered by a habit of shamefacedness, from expressing with our voice the rectitude which we preserve in our hearts; and therefore it is added, For whosoever shall confess me and my words in this adulterous and sinful generation, him also shall the Son of man confess, when he cometh in the glory of his Father with the holy angels.

For that faith which only remains in the mind is not sufficient, but the Lord requires also the confession of the mouth; for when the soul is sanctified by faith, the body ought also to be sanctified by confession. Him then who shall have confessed that his God was crucified, Christ Himself also shall confess, not here, where He is esteemed poor and wretched, but in His glory and with a multitude of Angels.