In Luke 23:34, Jesus asks forgiveness for those who spoke against him — illustrating the forgiveness promised here for words against the Son of Man.

Luke 22:65 shows people blaspheming Jesus (Son of Man) — precisely the sin Jesus said would be forgiven in Luke 12:10.

In Matthew 12:31, Jesus gives the same teaching on blasphemy against the Spirit — a direct parallel account.

In Matthew 12:32, the same saying includes the detail that speaking against the Son of Man may be forgiven — reinforcing the distinction.

In Mark 3:28, Jesus states that all sins and blasphemies will be forgiven — providing the positive side before the exception.

In Mark 3:29, blasphemy against the Holy Spirit is declared an eternal sin — the identical warning as here.

In 1 Timothy 1:13, Paul's blasphemy against Christ was forgiven due to ignorance — exemplifying the forgiveness promised for speaking against the Son of Man.

Hebrews 10:29 warns of punishment for outraging the Spirit of grace — echoing the severity of blasphemy against the Holy Spirit.

In Hebrews 6:4-8, those who fall away after experiencing the Spirit cannot be renewed — a parallel concept of irreversible sin against the Holy Spirit.

In Hebrews 10:26-31, deliberate sin after receiving truth leaves no sacrifice — warning of judgment similar to the unpardonable sin here.

In 1 John 5:16, a sin leading to death is distinguished — possibly referencing the same unforgivable sin against the Holy Spirit.