Mark 3:28-29

²⁸ “Truly I tell you, people will be forgiven for their sins and whatever blasphemies they utter, ²⁹ but whoever blasphemes against the Holy Spirit can never have forgiveness but is guilty of an eternal sin”—

Matthew 12:31-32

³¹Therefore I tell you, people will be forgiven for every sin and blasphemy, but blasphemy against the Spirit will not be forgiven. ³² Whoever speaks a word against the Son of Man will be forgiven, but whoever speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come.