New Living Translation
Look after each other so that none of you fails to receive the grace of God. Watch out that no poisonous root of bitterness grows up to trouble you, corrupting many.

American Standard Version
looking carefully lest there be any man that falleth short of the grace of God; lest any root of bitterness springing up trouble you , and thereby the many be defiled;

Berean Study Bible
See to it that no one falls short of the grace of God, and that no root of bitterness springs up to cause trouble and defile many.

Douay-Rheims Bible
Looking diligently, lest any man be wanting to the grace of God; lest any root of bitterness springing up do hinder, and by it many be defiled.

English Revised Version
looking carefully lest there be any man that falleth short of the grace of God; lest any root of bitterness springing up trouble you, and thereby the many be defiled;

King James Bible
Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;

World English Bible
looking carefully lest there be any man who falls short of the grace of God; lest any root of bitterness springing up trouble you, and many be defiled by it;

Young's Literal Translation
looking diligently over lest any one be failing of the grace of God, lest any root of bitterness springing up may give trouble, and through this many may be defiled;

Hebrews 12:15 Additional Translations ...