New Living Translation
How foolish can you be? After starting your new lives in the Spirit, why are you now trying to become perfect by your own human effort?

American Standard Version
Are ye so foolish? having begun in the Spirit, are ye now perfected in the flesh?

Berean Study Bible
Are you so foolish? After starting in the Spirit, are you now finishing in the flesh?

Douay-Rheims Bible
Are you so foolish, that, whereas you began in the Spirit, you would now be made perfect by the flesh?

English Revised Version
Are ye so foolish? having begun in the Spirit, are ye now perfected in the flesh?

King James Bible
Are ye so foolish? having begun in the Spirit, are ye now made perfect by the flesh?

World English Bible
Are you so foolish? Having begun in the Spirit, are you now completed in the flesh?

Young's Literal Translation
so thoughtless are ye! having begun in the Spirit, now in the flesh do ye end?

Galatians 3:3 Additional Translations ...