And they shall take some of the blood and put it on the two doorposts and on the lintel of the houses where they eat it.
Exodus 12:7
Surrounding context
12:6 Now you shall keep it until the fourteenth day of the same month. Then the whole assembly of the congregation of Israel shall kill it at twilight.
12:7 And they shall take some of the blood and put it on the two doorposts and on the lintel of the houses where they eat it.
12:8 Then they shall eat the flesh on that night; roasted in fire, with unleavened bread and with bitter herbs they shall eat it.