Matthew 12:32
And whoever speaks a word against the Son of man, it shall be forgiven him: but whoever speaks against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come.
Torrey's Topical Textbook—AKJV

Mark 3:28,29
Truly I say to you, All sins shall be forgiven to the sons of men, and blasphemies with which soever they shall blaspheme:
Torrey's Topical Textbook—AKJV