“…in the ministry, where I labored earnestly, I began to comprehend more fully, through the inspiration of the Holy Spirit, what I had read and been taught, and so they became in my mind established facts, of which I was as absolutely certain as I was of my own existence.” — President Joseph F. Smith
President Joseph F. Smith

President Joseph F. Smith
Teachings of Presidents of the Church: Joseph F. Smith, chapter 8
Especially for missionaries and parents and families