1 Samweli 20 : 33 1st Samuel chapter 20 verse 33

Sauli akamtupia mkuki wake ili kumpiga; basi Yonathani akajua ya kuwa baba yake ameazimu kumwua Daudi.
soma Mlango wa 20

Saul cast his spear at him to strike him. By this Jonathan knew that his father was determined to put David to death.