Work Out You Own Salvation: What does it mean to "work out own salvation with fear and trembling"? [Phil 2:12-13]. The Just Shall Live by Faith: What does it mean to "the just shall live by faith" as it says in Hebrews 10? [Hebrews 10:38, Habbakuk 2:4, Galatians 5, Matthew 23:23]. Working Out your Own Salvation in Fear & Trembling: What does it mean to work our your faith in fear & trembling? [Philippians 2:12-13]