Authorized Version
    Wherefore let him that thinketh he standeth take heed lest he fall.

American Standard Version
    Wherefore let him that thinketh he standeth take heed lest he fall.

The Bible in Basic English
    So let him who seems to himself to be safe go in fear of a fall.

The Darby Bible
    So that let him that thinks that he stands take heed lest he fall.

The Webster Bible
    Wherefore let him that thinketh he standeth, take heed lest he fall.

Young's Literal Translation
    so that he who is thinking to stand -- let him observe, lest he fall.

World English Bible
    Therefore let him who thinks he stands be careful that he doesn't fall.