“If Any Man Will Do His Will, He Shall Know of the Doctrine”
John 7:14–17
14 Now about the midst of the feast Jesus went up into the temple, and taught.
15 And the Jews marvelled, saying, How knoweth this man letters, having never learned?
16 Jesus answered them, and said, My doctrine is not mine, but his that sent me.
17 If any man will do his will, he shall know of the doctrine, whether it be of God, or whether I speak of myself.
President Dieter F. Uchtdorf said:
“. . . [W]hen you are trying to verify the truth of gospel principles, you must first live them. Put gospel doctrine and Church teachings to the test in your own life. Do it with real intent and enduring faith in God.
“If you will do these things, you have a promise from God—who is bound by His word [see D&C 82:10]—that He will manifest the truth to you by the power of the Holy Ghost. He will grant you greater light that will allow you to look through the darkness and witness unimaginably glorious vistas incomprehensible to mortal sight.
“Some may say that the steps are too hard or that they are not worth the effort. But I suggest that this personal testimony of the gospel and the Church is the most important thing you can earn in this life. It will not only bless and guide you during this life, but it will also have a direct bearing on your life throughout eternity.”
(“Receiving a Testimony of Light and Truth,” Ensign or Liahona, Nov. 2014, 21–22.)