American Standard Version
and again, The Lord knoweth the reasonings of the wise that they are vain.

Berean Study Bible
And again, “The Lord knows that the thoughts of the wise are futile.”

Douay-Rheims Bible
And again: The Lord knoweth the thoughts of the wise, that they are vain.

English Revised Version
and again, The Lord knoweth the reasonings of the wise, that they are vain.

King James Bible
And again, The Lord knoweth the thoughts of the wise, that they are vain.

World English Bible
And again, "The Lord knows the reasoning of the wise, that it is worthless."

Young's Literal Translation
and again, 'The Lord doth know the reasonings of the wise, that they are vain.'

1 Corinthians 3:20 Additional Translations ...