heart-religion

The hymn, too, is no longer selected from the prayer-book, but from some unwritten collection better adapted to their ideas of "heart-religion":

Lippincott's Magazine of Popular Literature and Science Volume 17, No. 097, January, 1876 Various

He knew very well that all this while he was a stranger to the spiritual nature of the divine law, and to heart-religion, and that except his righteousness exceeded this he should never go to heaven; yet he reflects upon it with some satisfaction that he had not been before his conversion an atheistical, profane, vicious man, but, according to the light he had, had lived in all good conscience before God.

Commentary on the Whole Bible Volume VI (Acts to Revelation) 1721

My religion is so through and through heart-religion, that I have not room for any other. "

The Theology of Schleiermacher: A Condensed Presentation of His Chief Work, "The Christian Faith" 1862-1929 1911