3 His brethren therefore said unto him, Depart hence, and go into Judaea, that thy disciples also may behold thy works which thou doest. 4 For no man doeth anything in secret, and himself seeketh to be known openly. If thou doest these things, manifest thyself to the world. 5 For even his brethren did not believe on him.
Matthew Henry's Commentary on John 7:3-5
Commentary on John 7:1-13
(Read John 7:1-13)
The brethren or kinsmen of Jesus were disgusted, when they found there was no prospect of worldly advantages from him. Ungodly men sometimes undertake to counsel those employed in the work of God; but they only advise what appears likely to promote present advantages. The people differed about his doctrine and miracles, while those who favoured him, dared not openly to avow their sentiments. Those who count the preachers of the gospel to be deceivers, speak out, while many who favour them, fear to get reproach by avowing regard for them.