In Matthew 11:19, the Son of Man is accused of gluttony and drunkenness — an example of the slander Jesus says is forgivable.

In Mark 3:29, the same teaching: blasphemy against the Spirit is an eternal sin—a direct parallel account.

In Luke 23:34, Jesus prays forgiveness for his crucifiers — illustrating that speaking against the Son of Man can be forgiven.

In Hebrews 10:26-29, deliberate sin after knowledge leaves no sacrifice—paralleling the unforgivable sin's eternal consequence.

Acts 3:19 calls for repentance and forgiveness — showing the remedy for those who sinned against the Son of Man.

Acts 26:14 records Jesus confronting Saul for persecution — an example of opposing the Son of Man that later led to forgiveness.

In Hebrews 6:4-6, those who fall away cannot be renewed to repentance—a parallel warning about an irreversible spiritual state.

Mark 3:28-29 is a parallel account of the same teaching: all sins forgiven except blasphemy against the Holy Spirit.

Luke 12:10 echoes the same saying about blasphemy against the Son of Man vs. the Holy Spirit, in a different context.

In Numbers 15:30, defiant sin (high-handed) results in being cut off—paralleling the willful sin against the Spirit.

In 1 Timothy 1:13, Paul's ignorant blasphemy is forgiven, contrasting with the willful rejection of the Spirit here that is unforgivable.

Luke 7:34 repeats the same accusation against the Son of Man eating and drinking — a parallel account of forgivable slander.

Hebrews 10:29 warns against insulting the Spirit of grace, paralleling the severity of blasphemy against the Holy Spirit.

1 John 5:16 mentions a sin that leads to death, possibly alluding to the same unforgivable sin as blasphemy against the Spirit.

In 1 Timothy 1:15, Christ saves sinners, including the worst, yet the sin against the Spirit is unforgivable—a stark exception.

Acts 3:15 continues: they killed the Author of life — further rejection of the Son of Man, still within forgivable sin.

Acts 3:14 says the people disowned the Holy and Righteous One — a clear act of speaking against the Son of Man.

John 7:12 records people calling Jesus a deceiver — a direct instance of speaking against the Son of Man.