“Knowledge does away with darkness, suspense and doubt; for these cannot exist where knowledge is. … In knowledge there is power. God has more power than all other beings, because He has greater knowledge; and hence He knows how to subject all other beings to Him. He has power over all.
History of the Church, 5:340; capitalization modernized; paragraph divisions altered; from a discourse given by Joseph Smith on Apr. 8, 1843
13 Wherefore, I the Lord ask you this question—unto what were ye ordained?
14 To preach my gospel by the Spirit, even the Comforter which was sent forth to teach the truth.
15 And then received ye spirits which ye could not understand, and received them to be of God; and in this are ye justified?
16 Behold ye shall answer this question yourselves; nevertheless, I will be merciful unto you; he that is weak among you hereafter shall be made strong.
17 Verily I say unto you, he that is ordained of me and sent forth to preach the word of truth by the Comforter, in the Spirit of truth, doth he preach it by the Spirit of truth or some other way?
18 And if it be by some other way it is not of God.
19 And again, he that receiveth the word of truth, doth he receive it by the Spirit of truth or some other way?
20 If it be some other way it is not of God.
“Therefore, sanctify yourselves that your minds become single to God, and the days will come that you shall see him; for he will unveil his face unto you, and it shall be in his own time, and in his own way, and according to his own will” D&C 88:68
If we rely on debate techniques or sales methods or group psychology, we are preaching the gospel in some other way, and it is not of God.
We must teach the gospel by the Spirit, and we must testify to the truth. When this is done, the Holy Spirit will testify to the sincere seeker that the things that have been said are true.
Intellectual things—reason and logic—can prepare the way, and they can help us in our preparation. But if we are tied to them instead of to the Spirit of the Lord, we are not teaching the gospel in the Lord’s way.
"Each and every member of The Church of Jesus Christ of Latter-day Saints bears a personal responsibility to learn and live the truths of the Savior’s restored gospel and to receive by proper authority the ordinances of salvation. We should not expect the Church as an organization to teach or tell us all of the things we need to know and do to become devoted disciples and endure valiantly to the end (see Doctrine and Covenants 121: 29). Rather, our individual responsibility is to learn what we should learn, to live as we know we should live, and to become what the Master would have us become." from "Increase in Learning: Spiritual Patterns for Obtaining Your Own Answers" by David A. Bednar
President Henry B. Eyring of the First Presidency said, “True conversion depends on a student seeking freely in faith, with great effort” (“We Must Raise Our Sights” [address to CES religious educators], Aug. 14, 2001], 4, LDS.org).