On his website, Arminian Perspectives, Ben Henshaw has a questions page at which he answers questions about Arminianism and Calvinism that visitors to his site pose in the comment section of the page. Here is a question submitted by a man named Kevin in the context of previous questions on the issue of eternal security and Ben’s answer:
Question: Have you written anything in regard to Hebrews 10:14?
Answer: I have touched on it briefly in the following posts:
The short answer is that “perfected” has reference to true forgiveness, found in Christ’s blood, that cleanses the conscience of the believer in contrast to the blood of animals under the old covenant (10:1-13, 15-18).
“For all time” has reference to the fact that Christ’s sacrifice which makes forgiveness possible does not need to be repeated (verse 10). It will forever accomplish its purpose of providing forgiveness for those who are (lit.) “being sanctified.” Those who are being sanctified can always find forgiveness in Christ’s “once for all [time]” sacrifice, as they continue to trust in Him.
However, one can forfeit the application of this sacrifice (forgiveness and inner cleansing/sanctification) through unbelief (10:22-39, esp. vs. 29).
I think you will find more to help you in the posts as well.
