St. Paul the Apostle

“Brethren, be strong in the Lord, and in the power of His might. Put on the whole armour of God, that ye may be able to stand against the wiles of the devil. For we wrestle not against flesh and blood, but against principalities, against powers, against the world rulers of the darkness of this age, against the spiritual hosts of wickedness in the heavenly places. For this cause take up the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand. Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness, and your feet shod with the preparation of the good tidings of peace; above all, take up the shield of faith, whereby ye shall be able to quench all the fiery darts of the evil one. And take the helmet of salvation, and the sword of the Spirit, which is the word of God.”

-St. Paul to the Ephesians

“Therefore being justified by faith, we have peace with God through our Lord Jesus Christ: by whom also we have access by faith into this grace wherein we stand, and rejoice in hope of the glory of God. And not only so, but we glory in tribulations also, knowing that tribulations worketh patience; and patience, experience; and experience, hope: And hope maketh not ashamed; because the love of God is shed abroad in our hearts by the Holy Spirit which is given unto us.”

St. Paul to the Romans 5:1-5