It seems that Exodus 31:12-17 and Lev 20:1-5, use the karet penalty in connection with capital punishment. Often it’s not clear what exactly is meant by karet.
15 Seven days you shall eat unleavened bread; on the first day you shall remove leaven from your houses, for whoever eats leavened bread from the first day until the seventh day shall be cut off from Israel.
19 For seven days no leaven shall be found in your houses; for whoever eats what is leavened shall be cut off from the congregation of Israel, whether an alien or a native of the land.
31 You shall say to the Israelites, “This shall be my holy anointing oil throughout your generations. 32 It shall not be used in any ordinary anointing of the body, and you shall make no other like it in composition; it is holy, and it shall be holy to you. 33 Whoever compounds any like it or whoever puts any of it on an unqualified person shall be cut off from the people.”
37 When you make incense according to this composition, you shall not make it for yourselves; it shall be regarded by you as holy to the Lord. 38 Whoever makes any like it to use as perfume shall be cut off from the people.
14 You shall keep the sabbath, because it is holy for you; everyone who profanes it shall be put to death; whoever does any work on it shall be cut off from among the people. 15 Six days shall work be done, but the seventh day is a sabbath of solemn rest, holy to the Lord; whoever does any work on the sabbath day shall be put to death.
20 But those who eat flesh from the Lord’s sacrifice of well-being while in a state of uncleanness shall be cut off from their kin.
21 When any one of you touches any unclean thing—human uncleanness or an unclean animal or any unclean creature—and then eats flesh from the Lord’s sacrifice of well-being, you shall be cut off from your kin.
25 If any one of you eats the fat from an animal of which an offering by fire may be made to the Lord, you who eat it shall be cut off from your kin.
27 Any one of you who eats any blood shall be cut off from your kin.
4 and does not bring it to the entrance of the tent of meeting, to present it as an offering to the Lord before the tabernacle of the Lord, he shall be held guilty of bloodshed; he has shed blood, and he shall be cut off from the people.
29 For whoever commits any of these abominations shall be cut off from their people.
8 All who eat it shall be subject to punishment, because they have profaned what is holy to the Lord; and any such person shall be cut off from the people.
Penalties for Violations of Holiness
20 The Lord spoke to Moses, saying: 2 Say further to the people of Israel:
Any of the people of Israel, or of the aliens who reside in Israel, who give any of their offspring to Molech shall be put to death; the people of the land shall stone them to death. 3 I myself will set my face against them, and will cut them off from the people, because they have given of their offspring to Molech, defiling my sanctuary and profaning my holy name. 4 And if the people of the land should ever close their eyes to them, when they give of their offspring to Molech, and do not put them to death, 5 I myself will set my face against them and against their family, and will cut them off from among their people, them and all who follow them in prostituting themselves to Molech.
6 If any turn to mediums and wizards, prostituting themselves to them, I will set my face against them, and will cut them off from the people.
17 If a man takes his sister, a daughter of his father or a daughter of his mother, and sees her nakedness, and she sees his nakedness, it is a disgrace, and they shall be cut off in the sight of their people; he has uncovered his sister’s nakedness, he shall be subject to punishment.
18 If a man lies with a woman having her sickness and uncovers her nakedness, he has laid bare her flow and she has laid bare her flow of blood; both of them shall be cut off from their people.
3 Say to them: If anyone among all your offspring throughout your generations comes near the sacred donations, which the people of Israel dedicate to the Lord, while he is in a state of uncleanness, that person shall be cut off from my presence: I am the Lord.
29 For anyone who does not practice self-denial during that entire day shall be cut off from the people. 30 And anyone who does any work during that entire day, such a one I will destroy from the midst of the people.
13 But anyone who is clean and is not on a journey, and yet refrains from keeping the passover, shall be cut off from the people for not presenting the Lord’s offering at its appointed time; such a one shall bear the consequences for the sin.
30 But whoever acts high-handedly, whether a native or an alien, affronts the Lord, and shall be cut off from among the people. 31 Because of having despised the word of the Lord and broken his commandment, such a person shall be utterly cut off and bear the guilt.
13 All who touch a corpse, the body of a human being who has died, and do not purify themselves, defile the tabernacle of the Lord; such persons shall be cut off from Israel. Since water for cleansing was not dashed on them, they remain unclean; their uncleanness is still on them.
20 Any who are unclean but do not purify themselves, those persons shall be cut off from the assembly, for they have defiled the sanctuary of the Lord. Since the water for cleansing has not been dashed on them, they are unclean.
Warning against Idolatry
29 When the Lord your God has cut off before you the nations whom you are about to enter to dispossess them, when you have dispossessed them and live in their land,
Laws concerning the Cities of Refuge
(Num 35:9–28; Josh 20:1–9)
19 When the Lord your God has cut off the nations whose land the Lord your God is giving you, and you have dispossessed them and settled in their towns and in their houses,