After a serious illness in the early 1650s, Ambrose wrote a devotional on what the Lord had done for his soul, titled Looking unto Jesus, or the Soul’s Eyeing of Jesus as Carrying on the Great Work of Man’s Salvation (1658). The book, which stresses experiential identification with Jesus in thought and behavior, soon became a classic of Christ-centered divinity. Its readers feel they are standing on holy ground. Ambrose describes numerous aspects of Christ’s ministry. For example, he presents Jesus’ ministry from eternity and during His life from a nine-point perspective: knowing Jesus, considering Jesus, desiring Jesus, hoping in Jesus, believing in Jesus, loving Jesus, rejoicing in Jesus, calling on Jesus, and conforming to Jesus in a particular aspect of His ministry. Regarding conformity to Christ in His resurrection, Ambrose writes, “Look much at Christ raised, Christ glorified. [Let us] see our own personal vivification linked inseparably unto, and bottomed immovably upon the resurrection of Christ. When we can by faith get a sight of this, how courageously and successfully the soul will grapple in the controversies of the Lord against the devil, and our own deceitful hearts…. O that I could set my faith more frequently on Christ’s resurrection, so that at last I could see it by the light of God to be a destinated principle of my vivification in particular!” (pp. 490-91). This book has been reprinted many times, influencing many Christians over the centuries to pursue a closer walk with God. It equals Samuel Rutherford’s Letters in its Christcenteredness. Author Isaac Ambrose nonconformist Puritan minister in the 17th Century.