God

1 Samuel 25:22
May God punish David, and ever so severely, if I let one of his men survive until morning."

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."

2 Samuel 3:9
May God punish Abner, and ever so severely, if I do not do for David as the LORD has sworn to him,

2 Samuel 19:13
And say to Amasa, 'Aren't you my flesh and blood? May God punish me, and ever so severely, if from this time you are not the commander of my army in place of Joab!'"

thou shalt

1 Samuel 14:39
As surely as the LORD lives who delivers Israel, even if it is my son Jonathan, he must die!" But not one of the troops said a word.

Genesis 38:24
About three months later, Judah was told, "Your daughter-in-law Tamar has prostituted herself, and now she is pregnant." "Bring her out!" Judah replied. "Let her be burned to death!"

2 Samuel 12:5, 31
David burned with anger against the man and said to Nathan: "As surely as the LORD lives, the man who did this deserves to die! . . .

Proverbs 25:16
If you find honey, eat just what you need, lest you have too much and vomit it up.