מדרש על שמואל ב 1:24

And he shall yield royal delights (Gen. 40:20). His daughters shall be worthy of kings. Hence, Scripture states: Who clothed you in scarlet with other delights (II Sam. 1:24).

... one who kills a person/nefesh . . . it is as if he removed the icons of the king, and he is sentenced and has no life, for the human is created in the d’mut of the ministering angels