According to Gal 1:17, shortly after his conversion Paul went away to Arabia. Scholars have puzzled over this, as it seems an odd choice. So at least three interrelated questions arise:
1) Where exactly does Paul refer to by Arabia? (Hint: where else is Arabia referred to in Galatians? Does this matter?)
2) Why did Paul choose to go there?
3) What exactly was Paul doing while there?
The floor is open ...