The Gospel is considered a mystery because its truth was hidden until God's appointed time for revelation in Christ.
The Gospel is termed a mystery as it was a divine plan concealed for ages, now revealed through Jesus Christ. As articulated in Ephesians 3:4-5, the 'mystery of Christ,' which was not made known to past generations, is fully unveiled in the New Testament. This mystery signifies the inclusion of both Jews and Gentiles in God's redemptive plan. The depth of this mystery illustrates God’s sovereignty and purpose in salvation, showing that the understanding of such profound truths requires the enlightening work of the Holy Spirit, enabling believers to recognize their significance in their lives and in God's overall plan.
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