If they murder

1. Num. 35: 16-18
     16 And if he smite him with an instrument of iron, so that he die, he is a murderer: the murderer shall surely be put to death.
     17 And if he smite him with throwing a stone, wherewith he may die, and he die, he is a murderer: the murderer shall surely be put to death.
     18 Or if he smite him with an hand weapon of wood, wherewith he may die, and he die, he is a murderer: the murderer shall surely be put to death.
2. Alma 30: 10
     10 But if he murdered he was punished unto death; and if he robbed he was also punished; and if he stole he was also punished; and if he committed adultery he was also punished; yea, for all this wickedness they were punished.
3. Alma 34: 11
     11 Now there is not any man that can sacrifice his own blood which will atone for the sins of another. Now, if a man murdereth, behold will our law, which is just, take the life of his brother? I say unto you, Nay.
4. Alma 39: 6
     6 For behold, if ye deny the Holy Ghost when it once has had place in you, and ye know that ye deny it, behold, this is a sin which is unpardonable; yea, and whosoever murdereth against the light and knowledge of God, it is not easy for him to obtain forgiveness; yea, I say unto you, my son, that it is not easy for him to obtain a forgiveness.
5. Alma 42: 19
     19 Now, if there was no law given—if a man murdered he should die—would he be afraid he would die if he should murder?
6. Hel. 6: 27
     27 Yea, that same being who did plot with Cain, that if he would murder his brother Abel it should not be known unto the world. And he did plot with Cain and his followers from that time forth.
7. 3 Ne. 16: 10
     10 And thus commandeth the Father that I should say unto you: At that day when the Gentiles shall sin against my gospel, and shall reject the fulness of my gospel, and shall be lifted up in the pride of their hearts above all nations, and above all the people of the whole earth, and shall be filled with all manner of lyings, and of deceits, and of mischiefs, and all manner of hypocrisy, and murders, and priestcrafts, and whoredoms, and of secret abominations; and if they shall do all those things, and shall reject the fulness of my gospel, behold, saith the Father, I will bring the fulness of my gospel from among them.
8. Ether 8: 23
     23 Wherefore, O ye Gentiles, it is wisdom in God that these things should be shown unto you, that thereby ye may repent of your sins, and suffer not that these murderous combinations shall get above you, which are built up to get power and gain—and the work, yea, even the work of destruction come upon you, yea, even the sword of the justice of the Eternal God shall fall upon you, to your overthrow and destruction if ye shall suffer these things to be.
9. D&C 132: 19, 26
     19 And again, verily I say unto you, if a man marry a wife by my word, which is my law, and by the new and everlasting covenant, and it is sealed unto them by the Holy Spirit of promise, by him who is anointed, unto whom I have appointed this power and the keys of this priesthood; and it shall be said unto them—Ye shall come forth in the first resurrection; and if it be after the first resurrection, in the next resurrection; and shall inherit thrones, kingdoms, principalities, and powers, dominions, all heights and depths—then shall it be written in the Lamb’s Book of Life, that he shall commit no murder whereby to shed innocent blood, and if ye abide in my covenant, and commit no murder whereby to shed innocent blood, it shall be done unto them in all things whatsoever my servant hath put upon them, in time, and through all eternity; and shall be of full force when they are out of the world; and they shall pass by the angels, and the gods, which are set there, to their exaltation and glory in all things, as hath been sealed upon their heads, which glory shall be a fulness and a continuation of the seeds forever and ever.
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     26 Verily, verily, I say unto you, if a man marry a wife according to my word, and they are sealed by the Holy Spirit of promise, according to mine appointment, and he or she shall commit any sin or transgression of the new and everlasting covenant whatever, and all manner of blasphemies, and if they commit no murder wherein they shed innocent blood, yet they shall come forth in the first resurrection, and enter into their exaltation; but they shall be destroyed in the flesh, and shall be delivered unto the buffetings of Satan unto the day of redemption, saith the Lord God.