Lesson from the letter of St. Paul the Apostle to the Ephesians

St Michael Archangel-PrayBrethren: Be strengthened in the Lord and in the might of His power. Put on the armor of God, that you may be able to stand against the wiles of the devil. For our wrestling is not against flesh and blood, but against the Principalities and the Powers, against the world rulers of this darkness, against the spiritual forces of wickedness on high. Therefore, take up the armor of God, that you may be able to resist in the evil day, and stand in all things perfect. Stand, therefore, having girded your loins with truth, and having put on the breast-plate of justice, and having your feet shod with the readiness of the Gospel of peace, in all things taking up the shield of faith, with which you may be able to quench all the fiery darts of the most wicked one.
And take unto you the helmet of salvation and the sword of the spirit, that is, the word of God. (Eph 6:10-17)