Then Abraham reached out his hand, took the knife, and prepared to slaughter ¹  his son.

and put a knife to your throat ¹  if you possess a large appetite. ² 

When he got home, he took a knife, grabbed his concubine, and carved her up into twelve pieces. ¹  Then he sent the pieces throughout Israel. ² 

Abraham took the wood for the burnt offering and put it on his son Isaac. Then he took the fire and the knife in his hand, ¹  and the two of them walked on together.

But Zipporah took a flint knife, cut off the foreskin of her son and touched it to Moses’ feet, ¹  and said, “Surely you are a bridegroom of blood ²  to me.”

Amasa did not protect himself from the knife in Joab’s other hand, and Joab ¹  stabbed him in the abdomen, causing Amasa’s ²  intestines to spill out on the ground. There was no need to stab him again; the first blow was fatal. ³  Then Joab and his brother Abishai pursued Sheba son of Bicri.