The Reverend Mr. John Swanston, Late Minister of the Gospel at Kinross, Sermons, on Several Important Subjects (Glasgow: Printed by William Smith, 1773), "A Sight of Christ, the Christian's Joy," p. 212

As a gold ring, wherein is set a precious stone, is said to be of great value, for the stone that is in it; so the worth of faith lies wholly in its relation to the pearl of great price, our Lord Jesus Christ, and his ev…