Why not just use a Bible if you are trying to prove that Christianity is Pro-Active?
Paul teaches that we are in a war, and we are soldiers of The Cross.
2 Timothy 2:3-5
King James Version
3 Thou therefore endure hardness, as a good SOLDIER of Jesus Christ.
Paul likens the spiritual fight against evil, in all forms, including against fake believers who teach a cursed gospel of works and water baptism........by showing us a Roman Centurian's body armour as the Spiritual Armour of a Christian.
Ephesians 6:11-18
King James Version
11 Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.
12 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.
13 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.
14 Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;
15 And your feet shod with the preparation of the gospel of peace;
16 Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked.
17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God:
18 Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;