The following are additional books that I am adding to the "theological readings" section:
(1) "Grace, Faith, Free Will; Contrasting Views of Salvation: Calvinism & Arminianism" by Robert E. Picirilli. Nashville, Tennessee: Randall House Publications, 2002.
(2) "Four Views On The Warning Passages in Hebrews" by Herbert W. Bateman IV, General editor. Grand Rapids, Michigan: Kregel Publications, 2007.
(3) "Kept By the Power of God: A Study of Perseverance and Falling Away" by I. Howard Marshall. Eugene, OR: Wipf and Stock Publishers, 2007.
(4) "Life In The Son: A Study of the Doctrine of Perseverance" by Robert Shank. Bloomington, MN: Bethany House Publishers, 1989.