
Heidelcast Heidelcast: Superfriends Saturday: The Error of Sandemanianism
15 snips
Mar 14, 2026 A spirited discussion tracing the Glazite movement and Robert Sandeman’s controversial claim that faith is mere intellectual assent. They contrast Sandemanian views with Reformed confessions and unpack definitions of knowledge, assent, and trust. Practical church implications, credible profession, and how faith relates to justification and sanctification are debated.
AI Snips
Chapters
Books
Transcript
Episode notes
Sandemanianism Frames Faith As Mere Intellectual Assent
- Sandemanianism reduces faith to intellectual assent and treats knowledge of Christ as the basis for righteousness rather than imputation of Christ's righteousness.
- Hosts trace the sect from John Glas to Robert Sandeman and note Sandeman's claim that men are "justified by the knowledge of a righteousness finished in the days of Tiberius."
Origins Of The Glazite Sandemanian Movement
- The movement began in 18th-century Scotland with John Glas, who rejected the state church and formed independent Glazite congregations, later led by his son-in-law Robert Sandeman.
- Sandeman published Theron and Aspasio (1757), attacked imputation, moved to New England, and the sect peaked at about a thousand members including Michael Faraday.
Confessions Define Faith As Knowledge Assent And Trust
- Reformed and confessional standards define justifying faith as knowledge plus assent plus fiducia (trust), not mere intellectual assent.
- Hosts cite Westminster Larger Catechism Q72 and Heidelberg Catechism Q21 emphasizing assent and heartfelt trust worked by the Spirit.

