The bible clearly says those who trust partly in their works won't make it... I'm not even the one saying it, God is. Death was the punishment to those who worked on the sabbath in old testament times, and that was a foreshadow to now when God says rest and you work (for righteousness I mean and to be justified) you will get destroyed as well because you need to rest in Jesus and his finished work. This is absolutely key, and it makes Christianity different from religion when the focus becomes on Jesus and not yourself or your works.
Romans 8:3
"For what the Law could not do, weak as it was through the flesh, God did: sending His own Son in the likeness of sinful flesh and as an offering for sin, He condemned sin in the flesh"
Romans 11:6
"But if it is by grace, it is no longer on the basis of works, otherwise grace is no longer grace."
Romans 3:20
"because by the works of the Law no flesh will be justified in His sight; for through the Law comes the knowledge of sin. But now apart from the Law the righteousness of God has been manifested, being witnessed by the Law and the Prophets, even the righteousness of God through faith in Jesus Christ for all those who believe; for there is no distinction;read more."