(The intro to the series can be found here)
The book of Galatians challenges the fluffy, feel good Christianity of our day; the type of Christianity known only in terms of calendars with majestic images with uplifting verses; the kind of Christianity equated with bright smiles and neatly kept hair; the kind of Christianity that courteously steps to the side of pluralism or remains quiet in the arena of ideas; the kind of Christianity that would never ever kill a wolf, say a sharp word, or dare offend another.
Galatians is no such book. It is genuine Christianity. And as such, it shows us the sanctity, and by extension, the preciousness of the Gospel.