"The Most Gracious God made us, my brethren, human beings, and not animals. He made us more honorable than the whole world. The most gracious God gave us, my brethren, eyes to look at the sky, the sun, the moon, and the stars so we can say: "O my God, if the sun which is your creation is so bright, how much brighter are you, O Holy Name, you who are the creator of heaven and earth, the author and fashioner? O my God, find me worthy to enjoy you."
God, my brethren, put the mind in our heads. Our mind is like a dish in which we should put all the teachings of the Gospel and not myths and idle talk, which are the art of the devil. He gave us ears to hear the Divine Liturgy which is celebrated by the priest in the church. He gave us a mouth to glorify our Lord, for us to say: "Lord Jesus Christ, Son and Word of the living God, through the Theotokos and all the angels, have mercy on us and forgive us who are sinners and your unworthy servants." We should confess with pure faith and receive the holy Sacraments with pure faith and fear and awe. That is how God wants us, brethren, and not to swear, not for one to betray another, not to take oaths and lie, not to steal from one another, not to take something belonging to another, not to take the name of God in vain for the smallest reason. Do you want to say, my brother: "By God"? Why don't you say: 'By the truth" ? Instead of swearing so your brother will believe you, tell him the straight truth, and if he doesn't believe you, go on your way. We should refrain, my brother, from swearing in the name of God or from taking oaths, and citing our saints. Some insignificant people even swear by the name of the Holy Trinity. Woe to them; a flaming tire will burn them and enflame them.
Do you know, brother, how God wants you to be? Just as you don't want your wife to have anything to do with another man, so God doesn't want you to have anything to do with the devil. Do you enjoy having your wife fornicate with another? Of course not. For someone else to kiss her? Neither do you want this. That is what God wants of you too, not to have anything to do with the devil."
-St. Kosmas Aitolos, the New Hieromartyr and Equal-to-the-Apostles