Neither do men put new wine into old bottles; otherwise the bottles break, and the wine runs out and the bottles perish; but they put new wine into new bottles, and both are preserved. The bottle is a man's heart; the heart in the body is the temple of God. Unless a man's heart and body has had the evil removed through repentance on the inward cross of self-denial, the heart cannot contain the filling of the Spirit of God; the Spirit would be lost because the man's evil desires wars with the Spirit of God and would cause it to diminish. Further, a man who had not first been purified on the cross would perish in the presence of God for only the righteous can scarcely be saved as the Lord snatches them from the fire that every man must pass through; flesh and blood cannot inherit the kingdom of God. God must give us a new heart, which can hold the new Spirit.
As Jesus said in Luke 5:39, No one, having drunk old wine, immediately desires the new wine, for he will say, 'The old wine is better.' If a sinner did not first have the sins slowly purged out of his heart, while learning to hate all evil, even if that sinner were translated into heaven, he would not be happy because he could not pursue all his old addictions. A man must crucify his lusts and affections on the inward cross of self-denial before he can enjoy fellowship in the heavens.
2 Before being sent (Mark! Sent) to labor in the harvest, you must be taught, restored, readjusted, perfected, and authorized — by Christ's Holy Spirit. The teacher is Christ. You are a blind pupil. If the pupil starts teaching before the teacher has authorized him, then the blind pupil thinks he can see and is superior to the teacher. (Luke 6:39-42). You must wait for the teacher to pronounce you ready to teach; or with still more training, ready to preach, and ready to substitute for him. You must wait until you are told what to do and when to do it. If you are teaching or preaching now, from where does your authority come? You say a college or university, or your religious organization? From where does their authority come? Jesus said you must be set to rights, (as in authorized to teach or preach by Jesus himself), restored, (to the divine image of God as was Adam before the fall) readjusted, and perfected. (Luke 6:39-42). Otherwise, you are claiming superiority to Him by teaching without His explicit authority and His personal training, from Him to you; without it, by teaching or preaching, Jesus says you are estimating yourself, a pupil, to be superior to Him, THE teacher. And this authorization of being set to rights from Christ does not come by feeling, doors opening, desires on your part, or your opinion - it has to come after perfection and from spoken words from Christ directly to you, and heard by you, that specifically tell you what to do and when to do it. The Lord of the harvest specifically sends forth his individual laborers. Such authorization comes from him directly and specifically; you hear him say: you are now a teacher, or: preach repentance with remission of sins.
Until your mind is renewed by repentance to purity with God's changing grace, your preachings and teachings come from the carnal mind, and the carnal mind is enmity against God. Rom 8:7. Until your mind has been changed, your words are without life, and speak from the nature of death. You can be a great public speaker receiving the praise of men, but so did the false prophets of old. Luke 6:26.