Appeal to Experience: Faith vs. Works

Galatians 3:1-5

O thoughtless Galatians, who did bewitch you, not to obey the truth--before whose eyes Jesus Christ was described before among you crucified?

this only do I wish to learn from you--by works of law the Spirit did ye receive, or by the hearing of faith?

so thoughtless are ye! having begun in the Spirit, now in the flesh do ye end?

so many things did ye suffer in vain! if, indeed, even in vain.

He, therefore, who is supplying to you the Spirit, and working mighty acts among you--by works of law or by the hearing of faith is it ?