Someone who believes in eternal security might say, “I don’t believe in the Catholic view of mortal and venial sins, as apparently you do! As a Once Saved Always Saved proponent, I believe all sins are equal in their severity before God, according to Jam. 2:10.”
Dan Corner’s response is below:
To reject the concept that all sin is equally severe does not automatically make that person a believer in the Catholic view of mortal and venial sins, as you assume! You are trying to discredit a conditional security by associating it with Catholicism. This is the logical fallacy known as guilt by association.
Remember, Scripture clearly teaches there are degrees of sin—greater sin (Jn. 19:11), eternal sin (Mk. 3:29), sin that leads to death and sin that does not lead to death (1 Jn. 5:16). James 2:10 does not contradict these verses! That verse and the one that follows it says:
For whoever shall keep the whole law, and yet stumble in one point, he is guilty of all. For He who said, “Do not commit adultery,” also said, “Do not murder.” Now if you do not commit adultery, but you do murder, you have become a transgressor of the law (Jam. 2:10,11).
James 2:11 goes on to say if a person does not commit adultery but does commit murder he is a lawbreaker. This clearly shows James is talking about those who are lawbreakers in verse 10, and not that all sin is equally severe in its consequences on the soul, as you assume!
Sins of worry and unthankfulness can never be compared in Scripture to sins of adultery and murder! In Rev. 21:8, the latter will send people to the lake of fire while the former are excluded from this list (and all other similar lists in Scripture).
Please view the video below by Dan Corner.
Are All Sins Equal | Are All Sins The Same | Degrees Of Sin