You see, without it I believe none can stay in the ministry for a lifetime. For the pressures, the pain, the disappointments, the hurts and sorrows, and the fierce wickedness that Satan and his host of demons throw at you will drive any and all away who have not been called by God to serve Him in such a battleground. Myself I include as an example. Whenever the feeling comes to me to quit, to run and fold up camp, God reminds me that it was He who called me, not myself choosing this work. In fact, listen to this exact situation in the lives of the Lord Jesus' disciples.
Human effort accomplishes nothing.
And the very words I have spoken to you are spirit and life. But some of you don t believe me. At this point many of his disciples turned away and deserted him. You alone have the words that give eternal life. We believe them, and we know you are the Holy One of God.