Exodus 12:21-22 Then Moses called for all the elders of Israel, and said unto them: 'Draw out, and take you lambs according to your families, and kill the passover lamb.

JPS_ASV_Byz⁽ⁱ⁾ ²¹ Then Moses called for all the elders of Israel, and said unto them: 'Draw out, and take you lambs according to your families, and kill the passover lamb. ²² And ye shall take a bunch of hyssop, and dip it in the blood that is in the basin, and strike the lintel and the two side-posts with the blood that is in the basin; and none of you shall go out of the door of his house until the morning.