Hayagrīva: During his lifetime Origen was a great teacher and was very much in demand. For him, preaching simply meant explaining the words of God and no more. He believed that first of all a preacher must be a man of prayer and must be in contact with God, and that he should pray for a better understanding of the scriptures.
Prabhupāda: Yes. That is real preacher. That is explained in the Vedic literature, śravaṇaṁ kīrtanam. First of all he becomes perfect by hearing. This is called śravaṇam. And when he is perfectly situated in spiritual life by hearing perfectly from the perfectly authorized person, then his next stage begins, kīrtanam. That is preaching. That śravaṇaṁ kīrtanam, everyone is hearing in this material world. Everyone is hearing. Even this material educationist, he also hears from the material person, professor. That hearing is there. Then he acts when he is grown-up, passed his examination, sometimes acts as professor. The same process: if one hears from the perfect spiritualized person, he becomes perfect, then he becomes actual preacher. Preaching, śravaṇaṁ kīrtanam, about Viṣṇu, not for any other person within this material world. The Supreme Person, transcendental Personality of Godhead, to hear about Him and to preach about Him, that is the duty of a liberated soul.
Hayagrīva: As far as seeming contradictions and seeming absurdities in scripture are concerned, Origen considered these as stumbling blocks allowed by God to exist in order for man to go beyond the literal meaning. He says, "In some cases no useful meaning attaches to the obvious interpretation, but everything in scripture has a spiritual meaning, but not all of it has a literal meaning."
Prabhupāda: Literal... Generally, every word in the scripture there is literal meaning, but one who cannot understand properly because one does not hear from the proper person, he makes some interpretation. But there is no need of interpretation in the words of God. It may be that the words of God sometimes cannot be understood by ordinary person; therefore he requires to understand through the via-media of transparent guru. Guru is fully cognizant of the words spoken by God. One has to accept, therefore, a guru to go through the scripture properly. Generally there is no ambiguity in the words of God, but due to our lack of perfect knowledge we sometimes cannot understand and try to interpret. But this is, this interpretation is not at all feasible, because imperfect person interpreting means whatever he interprets, that is imperfect. So the proper import of the words of scripture or words of God should be understood from a person who has realized God.