GOD'S WORD® Translation
Why? They didn't rely on faith to gain God's approval, but they relied on their own efforts. They stumbled over the rock that trips people.

American Standard Version
Wherefore? Because they sought it not by faith, but as it were by works. They stumbled at the stone of stumbling;

Berean Study Bible
Why not? Because their pursuit was not by faith, but as if it were by works. They stumbled over the stumbling stone,

Douay-Rheims Bible
Why so? Because they sought it not by faith, but as it were of works. For they stumbled at the stumblingstone.

English Revised Version
Wherefore? Because they sought it not by faith, but as it were by works. They stumbled at the stone of stumbling;

King James Bible
Wherefore? Because they sought it not by faith, but as it were by the works of the law. For they stumbled at that stumblingstone;

World English Bible
Why? Because they didn't seek it by faith, but as it were by works of the law. They stumbled over the stumbling stone;

Young's Literal Translation
wherefore? because -- not by faith, but as by works of law; for they did stumble at the stone of stumbling,

Romans 9:32 Additional Translations ...