"It is sin that darkens our minds and dims our perceptions. As sin is purged from our hearts, the light of the knowledge of the glory of God in the face of Jesus Christ, illuminating His word and reflected from the face of nature, more and more fully will declare Him “merciful and gracious, long-suffering, and abundant in goodness and truth.” Exodus 34:6 . 8T 322.1"
"And the Lord passed by before him, and proclaimed, The Lord, The Lord God, merciful and gracious, longsuffering, and abundant in goodness and truth,"
Ellen White directly references Exodus 34:6 in this passage.