And if any man hear my words, and believe not, I judge him not: for I came not to judge the world, but to save the world. And believe not - Και μη φυλαξῃ, And keep them not, is the reading of ABL, seven others; Syriac, Wheelock's Persian, two of the Arabic, Coptic, Sahidic, Ethiopic, Armenian, later Syriac, Vulgate, six of the Itala, and some of the fathers.
A man must hear the words of Christ in order to believe them; and he must believe, in order to keep them; and he must keep them in order to his salvation.
I judge him not - I need not do it: the words of Moses and the prophets judge and condemn him. See the notes on John 3:17; John 5:45.