John of Damascus — on Ps 9:6 (BARLAAM AND JOSEPH 7:55)

“From there by his grace [the apostles] were scattered abroad among all nations and preached the orthodox faith, baptizing them in the name of the Father, and of the Son and of the Holy Spirit, and teaching them to observe all the commandments of the Savior. So they gave light to the people that wandered in darkness and abolished the superstitious error of idolatry. Though the enemy chafes under his defeat and even now stirs up war against us, the faithful, persuading the fools and unwise to cling to the worship of idols, yet is his power grown feeble, and his swords have at last failed him by the power of Christ.”