Whoever says anything against the Son of Man will be forgiven, but whoever speaks against the Holy Spirit will not be forgiven, neither in this world nor in the one to come.
This saying goes deeper into the idea that Jesus expressed in the previous verse. He explains that sins and blasphemies can be forgiven when they are committed unknowingly or because of weakness, such as words spoken against the Son of Man, Jesus. But blasphemy against the Holy Spirit is uniquely serious, because it rejects not a human, but the divine truth that is clearly manifested through the Holy Spirit. The one who blasphemes against the Holy Spirit is the person who deliberately and stubbornly rejects the work of the Holy Spirit, even when the evidence of it is plain. This word of Jesus emphasizes that the sins that are forgiven are, in general, the result of repentance and remorse. But when a person rejects the witness of the Holy Spirit, he not only blocks himself from the path of repentance, but also cuts off his connection with God’s grace, which makes the possibility of forgiveness impossible. This passage also reminds believers to be watchful toward the work of the Holy Spirit, to receive His guidance and manifestations with a humble heart, because this is the way of God’s saving work.