John Gill Commentary John 7:13

"Yet no man spake openly of him for fear of the Jews." — John 7:13 (ASV)

However, no man spoke openly of him
So loud as to be overheard, at least by many, but in a secret and whispering way; or did not speak with freedom, or all their mind, what they really thought of him, nor with courage and boldness:

for fear the Jews ;
for fear of being mobbed by them, or up and prosecuted, or turned out of the synagogue; for a law was made, that whoever confessed him, should be so used; and this deterred persons from expressing the true sentiments of their minds about him.