"The Lord does not choose or accept laborers according to the advantages they have enjoyed, or according to the superior education they have received. The value of the human agent is estimated according to the capacity of the heart to know and understand God.... The highest possible good is obtained through a knowledge of God. “This is life eternal, that they might know Thee the only true God, and Jesus Christ, whom Thou hast sent.” John 17:3 . This knowledge is the secret spring from which flows all power.... CT 406.1"
"And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent."
Ellen White directly references John 17:3 in this passage.