‘Justification’ isn’t just about how someone becomes a Christian. It is about the status that they possess, and continue to possess, as full members of God’s people, no matter who their parents were or what their moral, cultural or religious background may have been. And, as verses 10 and 11 indicate, the faith which reaches out and embraces Jesus as Messiah embraces, in him, the way of suffering and death which marked him out. If you want to get to the resurrection of the dead, this is the only way to go.
Wright, Tom (2011-11-30). Paul for Everyone: Prison Letters (New Testament for Everyone) (p. 121). SPCK. Kindle Edition.