Many people have claimed at various times and in various ways that the God of the Old Testament is not the same God as the God of the New Testament. Sadly, this assertion misunderstands the nature and purposes of God. God is immutable: He does not change in His nature, character, will, or purposes. Nonetheless, He has chosen to reveal His person and plans progressively in the history of redemption through His Spirit. This does not mean that the Spirit did not reveal the face of God at all in the Old Testament. On the contrary, the Old Testament reveals that the Spirit disclosed the very personal nature of our Lord to His people throughout the old covenant while pointing forward to the fullness of this disclosure in Jesus Christ.

From the series: Who Is the Holy Spirit?.

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