How blessed and amazing are God's gifts, dear friends! Life with immortality, splendor with righteous, truth with confidence, faith with assurance, self-control with holiness! And all these things are within our comprehension.
Pope Clement ILet us cleave... to those who cultivate peace with godliness, and not to those who hypocritically profess to desire it. For the Scripture says in a certain place (Mk. 7:6), 'This people honors Me with their lips, but their hearts is far from Me.'
Pope Clement I... faithfully and strenuously you should resist the heretics in defense of the only true and life-giving faith, which the Church has received - the apostles and imparted to her sons. For the Lord of all gave to His apostles the power of the Gospel, through whom also we have known the truth, that is, the doctrine of the Son of God: to whom also did the Lord declare: 'He who hears you, hears Me; and he who despises you, despises Me, and Him who sent Me' (Lk. 10:16).
Pope Clement I