Faith: Testimony is a Measurement of Faith

"Our testimony is a measurement of our faith. Faith is testimony; testimony is faith….

Generally, testimony emerges over time and through life’s experiences. We can compare testimony to the process of watching a photograph develop. Powerful impressions of the Spirit come like flashes of light on receptive photographic film. Like the chemicals needed to develop the picture, certain spiritual conditions and experiences are needed in our lives for our personal testimony to develop into a certain truth and knowledge. And like a photograph, a testimony, if not carefully preserved, will fade with time.

Testimonies often come when there is willingness to serve where we are called. They come when a decision is made to strive to be obedient. Testimonies come during efforts to help, lift, and strengthen others. They come from prayer and from studying the scriptures and applying them in our lives. Whatever our circumstances, there seem to be moments in each of our lives when we can be given the knowledge that God lives and that Jesus is the Christ. There is no greater search in life that we can embark upon than the quest to gain a testimony of the truth."

Robert D Hales, “The Importance of Receiving a Personal Testimony”, October 1994 General Conference

https://www.lds.org/general-conference/1994/10/the-importance-of-receiving-a-personal-testimony?lang=eng