Q100. Is misusing God's name by swearing and cursing really such a serious sin that God is angry even with those who do nothing to stop it?

Leviticus 5:1

“And if a soul sin, and hear the voice of swearing, and a witness, whether he hath seen or known ; if he do not utter , then he shall bear his iniquity.”

Leviticus 24:10–17

“And the son of an Israelitish woman, whose father an Egyptian, went out among the children of Israel: and this son of the Israelitish and a man of Israel strove together in the camp; And the Israelitish woman's son blasphemed the name , and cursed. And they brought him unto Moses: (and his mother's name Shelomith, the daughter of Dibri, of the tribe of Dan:) And they put him in ward, that the mind of the LORD might be shewed them. And the LORD spake unto Moses, saying, Bring forth him that hath cursed without the camp; and let all that heard lay their hands upon his head, and let all the congregation stone him. And thou shalt speak unto the children of Israel, saying, Whosoever curseth his God shall bear his sin. And he that blasphemeth the name of the LORD, he shall surely be put to death, all the congregation shall certainly stone him: as well the stranger, as he that is born in the land, when he blasphemeth the name , shall be put to death. And he that killeth any man shall surely be put to death.”