36863, True to the Faith, Signs, 163
Signs are events or experiences that demonstrate the power of God. They are often miraculous. They identify and announce great events, such as the Savior's birth, death, and Second Coming. They remind us of covenants the Lord has made with us. Signs may also bear witness of a divine calling or indicate the Lord's disapproval.
Some people claim that they would believe in God or His work if they were able to receive a sign. But the Lord has said, "Faith cometh not by signs, but signs follow those that believe" (D&C 63:9). Such signs are given to those who are faithful and obedient in order to strengthen them in their faith.
Additional references: Matthew 12:38-39; Mark 13:22-27; Luke 2:8-17; Alma 30:43-52; Helaman 14; 3 Nephi 1:13-21; 3 Nephi 8:2-25; Ether 12:6; D&C 63:7-12
See also Faith; Obedience; Second Coming of Jesus Christ