Book excerpt: Rev. John Newton describes how God's grace changes a person during the three stages of spiritual maturity found in Mark 4:28, of the Blade, the Ear, and the Full Corn in the Ear. The "Blade's" characteristic is "desire," or eagerness in his new life. The "Ear's" characteristic is "conflict," with many trials. The "Full corn in the ear's" characteristic is "contemplation," drawing upon much experience. Using this outline a believer can identify general states of sanctification to help work out their own salvation, as God works in them.