Is the doctrine of justification in the Old Testament?

Where is justification visible in the Old Testament? How should we think about the connection between faith and works in the life of Abraham? Should we consider Abraham a type of new Adam and if so, how does he point us forward to Christ as the last Adam? Is justification lost on the prophets? In this new Credo video, Stephen Dempster explains how the doctrine of justification by faith alone in Christ alone is present in the Old Testament.