Berean Study Bible
That is correct: They were broken off because of unbelief, but you stand by faith. Do not be arrogant, but be afraid.

King James Bible
Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear:

American Standard Version
Well; by their unbelief they were broken off, and thou standest by thy faith. Be not highminded, but fear:

Darby Bible Translation
Right: they have been broken out through unbelief, and thou standest through faith. Be not high-minded, but fear:

Douay-Rheims Bible
Well: because of unbelief they were broken off. But thou standest by faith: be not highminded, but fear.

English Revised Version
Well; by their unbelief they were broken off, and thou standest by thy faith. Be not highminded, but fear:

Young's Literal Translation
by unbelief they were broken off, and thou hast stood by faith; be not high-minded, but be fearing;