Psalm 94.11
Septuagint

kurioV ginwskei touV dialogismouV 
twn anqrwpwn, oti eisi mataioi

New Testament - 1 Corinthians 3.20

kurioV ginwskei touV dialogismouV 
twn sofwn oti eisin mataioi

Septuagint

The Lord knows the thoughts of men, that they are vain

New Testament

The Lord knoweth the reasonings of the wise, that they are vain

Masoretic Text

Jehovah knoweth the thoughts of man, That they are vanity

Comments:  The NT, LXX and the MT agree in general.  The NT author has employed poetic license with his substitution of  “the wise” for  “men.”