It is the Spirit who gives life; the flesh is no help at all. The words that I have spoken to you are spirit and life. 64 But there are some of you who do not believe.” (For Jesus knew from the beginning who those were who did not believe, and who it was who would betray him.)
— John 6:63–64 —
The doctrine of illumination explains how spiritual insight is given to God’s children by the Holy Spirit. The locus classicus for this doctrine is 1 Corinthians 2:10–16, where the Apostle Paul explains the difference between those with the Spirit and those without. Describing this difference, he identifies two kinds of people—the natural man (i.e., the man without the Spirit) and the spiritual man (i.e., the man with the gift of the Spirit). In Paul’s thinking, there is no third category. The only way a man can rightly understand the mind of God is to have God himself reveal himself to the man. This occurs first in conversion, but then progressively in sanctification as the Spirit continues to instruct the saints through God’s Word (cf. John 17:17).
Going further, doctrine of illumination is the personal and subjective complement to the doctrine of inspiration. Whereas the Spirit inspired the words of the biblical authors (2 Pet. 1:19–21), the same Spirit must give light to the Scripture, in order for the child of God to understand God, his world, and his salvation. Without this illumination, the sinner remains in the dark—totally lost and wholly unable to find God (cf. Acts 17:27). Continue reading