The Liturgical Press
The capacity for the discernment of spirits responds to a profound expectation and a pervasive temptation within Christianity. All human beings who search for God want God to guide their lives, and Christians have been taught normatively to expect "to be guided by the Spirit" (Gal 5: 18; Rom 8: 14).
New Dictionary of Catholic Spirituality
Buckley, M. J. (1993). Discernment of Spirits. In M. Downey (Ed.), The New Dictionary of Catholic Spirituality. The Liturgical Press, 1993, pp. 274-281.