Is the blaspheming of God’s Name by swearing and cursing such a grievous sin that God is angry also with those who do not prevent and forbid it as much as they can?

#HC100

Certainly, for no sin is greater or provokes God’s wrath more than the blaspheming of His Name. That is why He commanded it to be punished with death.

Proofs

Certainly, (Leviticus 5:1)
for no sin is greater or provokes God’s wrath more than the blaspheming of His Name. That is why He commanded it to be punished with death. (Leviticus 24:16)