If a man: chooses to die to self; preaches death and the dead come to life those are good reasons to believe he is a true servant of God
Titus 3:1-8 wonderfully teaches: "A heart that is gripped by the kindness of God, will kindly display the heart of God."
God has given us everything we need for life and godliness in order to mature as Christians. However, what we do with this determines whether we mature or stay as spiritual infants.