As Paul continues guiding Timothy, his "so in the faith" on how to fix the broken church, he starts chapter 4 reminding Timothy that there will be some who fall away, listening to deceptive teaching and wrong doctrine. The important lesson for the church is to be practicing godliness--exercising spiritually--and to be nourished with the truth--the word of God--so that we can have God's strength to reject the error and deceit of the false teachers.