The Glasites or Glassites were a small Christian church founded in about 1730 in Scotland by John Glas. Glas's faith, as part of the First Great Awakening, was spread by his son-in-law Robert Sandeman into England and America, where the members were called Sandemanians.
Glas dissented from the Westminster Confession only in his views as to the spiritual nature of the church and the functions of the civil magistrate. But Sandeman added a distinctive doctrine as to the nature of faith which is thus stated on his tombstone:"That the bare death of Jesus Christ without a thought or deed on the part of man, is sufficient to present the chief of sinners spotless before God."
In a series of letters to James Hervey, the author of Theron and Aspasio, Sandeman maintained that justifying faith is a simple assent to the divine testimony concerning Jesus, differing in no way in its character from belief in any ordinary testimony.