John 10:10a The thief cometh not, but for to steal, and to kill, and to destroy:

Here is a hard truth that you might not be ready to receive. The devil is coming for you ready or not. You might just want to get yourself ready.

Ephesians 2:2 Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience:

Prince of the power of the air is a title for Satan. We have been promised eternal life but we are not there yet. We still live in this world and this world is full of evil. In order to survive the onslaught that the devil has for us, we need to be equipped.

Ephesians 6:12-18 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;

The weapons of this war are: truth, righteousness, the gospel, faith, salvation, the Word of God and prayer. This is spiritual warfare and we must be trained in how to use these spiritual weapons because we were not spirit and it does not come to us naturally how to use them.