Amasa

2 Samuel 17:25
Absalom had appointed Amasa over the army in place of Joab. Amasa was the son of a man named Ithra, the Ishmaelite who had married Abigail daughter of Nahash and sister of Zeruiah the mother of Joab.

1 Chronicles 2:16, 17
Their sisters were Zeruiah and Abigail. And the three sons of Zeruiah were Abishai, Joab, and Asahel. . . .

1 Chronicles 12:18
Then the Spirit came upon Amasai, the chief of the Thirty, and he said: "We are yours, O David! We are with you, O son of Jesse! Peace, peace to you, and peace to your helpers, for your God will help you." So David received them and made them leaders of his troops.

God

Ruth 1:17
Where you die, I will die, and there I will be buried. May the LORD punish me, and ever so severely, if anything but death separates you and me."

1 Kings 19:2
So Jezebel sent a messenger to Elijah, saying, "May the gods deal with me, and ever so severely, if by this time tomorrow I do not make your life like the lives of those you killed!"

room of Joab

2 Samuel 19:5-7
Then Joab went into the house and said to the king, "Today you have disgraced all your servants who have saved your life and the lives of your sons and daughters, of your wives, and of your concubines. . . .

2 Samuel 3:29, 30
May it whirl over the heads of Joab and the entire house of his father, and may the house of Joab never be without one having a discharge or skin disease or who leans on a staff or falls by the sword or starves." . . .

2 Samuel 8:16
Joab son of Zeruiah was over the army; Jehoshaphat son of Ahilud was the historian;

2 Samuel 18:11
"You just saw him!" Joab exclaimed. "Why did you not strike him to the ground right there? I would have given you ten shekels of silver and a warrior's belt!"