God's salvation is truly wonderful! God desires not only to save us from eternal perdition, but also to grow in us, transform us, and eventually glorify us that we would be His glorious expression for eternity. In order for us to fully enjoy His marvelous salvation, we must pass through many spiritual experiences and practical dealings, including purifying our heart, confessing our sins, being enlightened by God, consecrating ourselves to God, living by our conscience, and learning to serve God by His power and not our own. In The Pure in Heart Witness Lee presents many practical principles which open the way for believers to progress in their Christian experience. From the first chapter to the last, The Pure in Heart provides both spiritual insight and experiential illustrations to aid in our enjoyment of God's rich salvation for the accomplishment of His heart's desire.

The governing and controlling vision in the Bible is the economy of God. For the fulfillment of His economy, "God Himself went through five major steps—incarnation, human living, crucifixion, resurrection, and ascension—to produce the church. None of the five major steps is simple. God Himself becoming flesh was not a simple matter. To God, it was not simple to experience human living. He was God yet He lived in a man on the earth to have the human living for thirty-three and a half years. He also passed through death and then resurrected and ascended to heaven. Without passing through these processes, God could not produce the church."

The speaking concerning the golden lampstand in the Bible is in three stages: The first stage is the golden lampstand, the second stage is the golden lampstand with the olive oil (the Holy Spirit), and the third stage is the singular lampstand becoming the plural lampstands—one lampstand becoming many lampstands. This is very meaningful. In Exodus 25, the emphasis of the lampstand is on Christ; in Zechariah 4, the emphasis is on the Holy Spirit; and in Revelation 1, the emphasis is on the churches. All three passages mention the lampstand, but in the first passage Christ is emphasized, in the second passage the Holy Spirit is emphasized, and in the third passage the churches are brought forth.