Albert Barnes on John 7:7

The world cannot hate you. You profess no principles in opposition to the world. You do not excite its envy, or rouse against you the civil rulers. As you possess the same spirit and principles with the men of the world, they cannot be expected to hate you.

I testify of it. I bear witness against it. This was the main cause of the opposition which was made to him. He proclaimed that men were depraved, and the result was that they hated him. We may expect that all who preach faith- fully against the wickedness of men will excite opposition. Yet this is not to deter us from doing our duty, and, after the example of Jesus, from proclaiming to men their sins, whatever may be the result.

(d) "the world" Jn 15:19