Original sentence: Calvin did not approve of free religious texts (hymns) for use in church; the Bible was the only source of texts he approved.His profound reverence for the biblical text "...caused him to insist that public praise in church should be confined to the language of the Bible, adapted to the minimum extent required for congregational singing
Edited sentence: Calvin did not approve of free religious texts (hymns) for use in church;  Scripture was the only source of texts he approved.His profound reverence for Scripture "...caused him to insist that public praise in church should be confined to the language of the Bible, adapted to the minimum extent required for congregational singing