I plan to summarize this Puritan book for the benefit of fellow Christians:
Of the Saints’War against the Devil:
Wherein a Discovery is made of that grand Enemy of God and his People, in his Policies, Power, Seat of his Empire, Wickedness, and chief design he hath against the Saints.
A Magazine Opened, From whence the Christian is furnished with Spiritual Arms for the Battle, helped on with his Armour, and taught the use of his Weapon: together with the happy issue of the whole War, ByWilliam Gurnall, M.A.,
Of Emanuel College, Pastor of the Church of Christ, Lavenham, Suffolk.
“Finally, my 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 rulers of
the darkness of this world, against spiritual wickedness in high places.
“Wherefore take unto you 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 gospel of peace; above all, taking the shield of
faith, wherewith ye shall be able to quench all the fiery darts of the
wicked. And take the helmet of salvation, and the sword of the Spirit,
which is the word of God: praying always with all prayer and
supplication in the Spirit, and watching thereunto with all
perseverance and supplication for all saints; and for me, that
utterance may be given unto me, that I may open my mouth boldly, to
make known the mystery of the gospel, for which I am an ambassador
in bonds: that therein I may speak boldly, as I ought to speak.”
— Ephesians 6:10-20.