A wartime mindset must include shrewd knowledge of enemy tactics. Ephesians 5:11, "Take no part in unfruitful works of darkness, but instead expose them."
Christianity stands or falls with the reality of Satan and demons. Why? Because Jesus spent his whole ministry fighting them. If they are not real he is reduced to a comic figure.
His nature is falsehood! He only speaks the truth to deceive.
He destroys the obedience of faith.
He opposes the truth reaching and converting people.
It doesn't lead them to God because it leads them to get as many kicks here as possible.
He attacks faith to destroy believers:
We began with liar and end with pride. Connection: the truth is that God is God and we are not. It is humbling. The only way to rebel against the lowliness of creaturehood is to be a liar. Humility under God is the great devil resistance (James 4:6–7).
By John Piper. © Desiring God. Website: www.desiringGod.org. Email: mail@desiringGod.org. Toll Free: 1.888.346.4700. Photo credit: ©GettyImages/eugenekeebler