The Christian life is not a playground; it is a battleground.
Warren W. Wiersbe
Ephesians 6:12 KJV 1900
12For 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.
1 Peter 5:8 KJV 1900
8Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour: