Marriage is a human relationship ordained and instituted by God (Malachi 2:14-16). His original design was one man and one woman united by covenant and sexual union for life (Genesis 2:23-4). The relationship was a mystery in that it set forth symbolically in physical form the relationship between himself and his people (Eph. 5:21-33; Isaiah 54:5; Hosea 2:14-23; Ezekiel 16; Jeremiah 3:20).
John Piper

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