Law -- Grace

Galatians 5:4 NASB
You have been severed from Christ, you who are seeking to be justified by law; you have fallen from grace.

Notice the italicized words--law and grace.
What is their relationship in this verse?
If you seek to be justified by law, do you have ahold of grace?
If you haven't fallen from grace, are you seeking to be justified by law?
If we want to explore the meaning of this verse in context, it helps to remember what Paul has said so far in Galatians about law and grace.
Read the following verses and answer each question.
How is the information in each of these verses related to what Paul is saying in Galatians 5:4?
Galatians 1:6 How were they called?
Galatians 1:15 How was Paul called?
Galatians 2:9 What caused James, Cephas, and John to extend to Paul and Barnabas the right hand of fellowship?
Galatians 2:16 By what are we not justified? By what are we justified?
Galatians 2:19 Since Paul wanted to live to God, what did he have to die to?
Galatians 2:21 What would be true if Christ died needlessly? If Christ died needlessly, what is nullified?
Galatians 3:10 Who is under a curse?
Galatians 3:11 What is evident? Why is it evident?
Galatians 3:12 What is not of faith?
Galatians 3:13 From what did Christ redeem us?
Galatians 3:17 What does not nullify the promise?
Galatians 3:18 What isn't the inheritance based on?
Galatians 3:19 What was added until the seed should come to whom the promise had been made?
Galatians 3:21 What does not impart life?
Galatians 3:24 What has become our tutor to lead us to Christ, that we may be justified by faith?
Galatians 4:4-5 What did God's Son do so that we could receive the adoption as sons?

From these verses, what has Paul shown the Galatians and us about the relationship of the law to grace? How does what he says in these verses relate to what he tells them in Galatians 5:4?