Mark 3:29 (BSB)

But whoever blasphemes against the Holy Spirit will never be forgiven; he is guilty of eternal sin.”

From Mark 3. Also in the ESV.

Commentary on Mark 3:29

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Mark 3:22-30: I. Here is, The impudent impious brand which the scribes fastened upon Christ's casting out devils, that they might evade and invalidate the conviction of it, and have a poor excuse for not yielding to it. These scribes came down from Jerusalem, Mar 3:22.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Mark 3:29: And the multitude sat about him,.... In a circle, all around him, to hear him preach; so that there was no such thing as the messenger coming near him; but the message being whispered from one to another, it came to those who sat nearest him: and they said unto him, behold, thy mother and thy brethren without seek for thee: in five of Beza's...