1 John 3:15

And Esau hated Jacob because of the blessing wherewith his father blessed him: and Esau said in his heart, The days of mourning for my father are at hand; then will I slay my brother Jacob.

Thou shalt not go up and down as a talebearer among thy people: neither shalt thou stand against the blood of thy neighbor; I am the LORD. Thou shalt not hate thy brother in thine heart: thou shalt in any wise rebuke thy neighbor, and not suffer sin upon him. Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbor as thyself: I am the LORD.

And Absalom spake unto his brother Amnon neither good nor bad: for Absalom hated Amnon, because he had forced his sister Tamar. And it came to pass after two full years, that Absalom had sheepshearers in Baalhazor, which is beside Ephraim: and Absalom invited all the king's sons. And Absalom came to the king, and said, Behold now, thy servant hath sheepshearers; let the king, I beseech thee, and his servants go with thy servant. And the king said to Absalom, Nay, my son, let us not all now go, lest we be chargeable unto thee. And he pressed him: howbeit he would not go, but blessed him. Then said Absalom, If not, I pray thee, let my brother Amnon go with us. And the king said unto him, Why should he go with thee? But Absalom pressed him, that he let Amnon and all the king's sons go with him. Now Absalom had commanded his servants, saying, Mark ye now when Amnon's heart is merry with wine, and when I say unto you, Smite Amnon; then kill him, fear not: have not I commanded you? be courageous, and be valiant.

He that hateth dissembleth with his lips, and layeth up deceit within him; When he speaketh fair, believe him not: for there are seven abominations in his heart. Whose hatred is covered by deceit, his wickedness shall be shewed before the whole congregation.

Ye have heard that it was said of them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment: