King James Bible
"Have ye suffered so many things in vain? if it be yet in vain."
Paul questions whether the Galatians' past hardships for the gospel were meaningless, likely referring to persecution they endured after accepting Christ. The rhetorical question expresses both disappointment and disbelief that they would abandon grace for law-keeping after paying such a price. This hopeful qualifier suggests their suffering might still have purpose if they return to the true gospel. Paul leaves the door open for repentance, implying their spiritual regression isn't necessarily final.