This is an audio podcast of "Introduction to the Westminster Shorter Catechism," taught by Dr. James J. Cassidy. Videos of each lesson including Spanish and Chinese subtitles are available for free online at reformedforum.org.

Dr. Cassidy is the pastor of South Austin Presbyterian Church. He graduated in 2014 from Westminster Theological Seminary with the Ph.D in systematic theology writing on the theology of Karl Barth. He is the author of God's Time For Us: Barth on the Reconciliation of Eternity and Time in Jesus Christ (Lexham Press).

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Q. 18. Wherein consists the sinfulness of that estate whereinto man fell? A. The sinfulness of that estate whereinto man fell consists in the guilt of Adam's first sin, the want of original righteousness, and the corruption of his whole nature, which is commonly called original sin; together with all actual transgressions which proceed from it.