"There is a communication of the Spirit of God which is sometimes vouchsafed to some of His people that is somewhat besides, if not beyond, that witnessing of a sonship spoken of before. It is a glorious divine manifestation of God unto the soul, shedding abroad God's love in the heart.
It is a thing better felt than spoke of. It is no audible voice but is a ray of glory filling the soul with God as He is life, love and liberty".
William Guthrie cited in Dr Martyn Lloyd-Jones - "The Sons of God" - Romans Series Volume 7 - Banner of Truth (1969) - (p342).