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Reformed Catechism Q & A

Questions from the Westminster and Heidelberg Catechisms are published here consecutively twice a year. New questions and answers appear every day:

Heidelberg Q. 83. What are the keys of the kingdom of heaven?
A. The preaching of the holy gospel and church discipline. By these two the kingdom of heaven is opened to believers and closed to unbelievers.

Heidelberg Q. 84. How is the kingdom of heaven opened and closed by the preaching of the gospel?
A. According to the command of Christ, the kingdom of heaven is opened when it is proclaimed and publicly testified to each and every believer that God has really forgiven all their sins for the sake of Christ's merits, as often as they by true faith accept the promise of the gospel. The kingdom of heaven is closed when it is proclaimed and testified to all unbelievers and hypocrites that the wrath of God and eternal condemnation rest on them as long as they do not repent. According to this testimony of the gospel, God will judge both in this life and in the life to come.

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Complete lists of Questions and Answers:
Heidelberg Catechism (1563)
Westminster Shorter Catechism (1647)