We must live according to the light and intelligence that God has revealed

But the thing for us to do is to live according to the light and intelligence that God has revealed to us in this dispensation, that we may be in harmony with the heavenly powers and with heavenly beings, and especially with our Lord Jesus Christ, who stands at our head, who is our lawgiver, our exemplar, and the way of life and salvation to all the world, through whom we may enter into the celestial kingdom of God, and without whom we can never enter that state of glory worlds without end. D&C 76:112 He is the way, the light and life of the world; John 14:6 Mosiah 16:9 3 Ne. 9:18 D&C 11:28 and whosoever will obey the commandments He has given, and do the works which he has done, and commanded us to do, shall not walk in the darkness, but shall have in them the light of life. John 8:12
Author/Source: Funeral Discourse. Discourse by President Joseph F. Smith, delivered in the 14th Ward Assembly Rooms, at the Funeral Services of Sister Elizabeth H. Cannon, on Sunday, Jan. 29, 1882. Reported By: Unknown.