Passage
`Ye according to the flesh do judge; I do not judge any one,
`Ye according to the flesh do judge; I do not judge any one,
John 8:13 The Pharisees, therefore, said to him, `Thou of thyself dost testify, thy testimony is not true;'
John 8:14 Jesus answered and said to them, `And if I testify of myself--my testimony is true, because I have known whence I came, and whither I go, and ye--ye have not known whence I come, or whither I go.
John 8:15 `Ye according to the flesh do judge; I do not judge any one,
John 8:16 and even if I do judge my judgment is true, because I am not alone, but I and the Father who sent me;
John 8:17 and also in your law it hath been written, that the testimony of two men are true;
The verse centers on "flesh" and "judge". It is saying that the verse draws attention to "flesh" and "judge", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 14's "Jesus answered and said to them And..." into verse 16's "and even if I do judge my...", so "flesh" and "judge" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "flesh" and "judge" with trust shaped by these words, not by a vague optimism outside the passage.