Salvation Accompanied

What is the relationship between our works and our salvation? Are they a chicken and the egg sort of thing, or does one necessarily precede the other? It is a sad fact that getting this question wrong puts us in danger of the fires of hell, because NO ONE will ever be able to be good enough to avoid the wrath of God for our sin. And yet the writer of Hebrews states that he sees things that accompany salvation in the Hebrews. It is important to note and understand that these things are evidentiary, NOT causative.