Please click on the link to view the booklet Hold Fast: Hebrews 6:4-6 and the Possibility of Apostasy by Robert E. Picirilli from from Hopeway Publishing.
From Hopeway’s description of the booklet:
Hebrews is a message of warning. The admonition to “hold fast” to one’s profession is found three times in Hebrews. The admonition was to hold fast to the better hope, better testament, better covenant, better promises, better thing, a better and enduring substance. They were warned not to forsake this new and better way. This booklet by Dr. Robert Picirilli is an exegesis of a key passage concerning those who may forsake the new and better way.
Dr. Picirilli is a former professor of Greek and New Testament studies at Welch College. For over 65 years he has been teaching, preaching, and writing Arminian theology.