Exodus 12:22 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. (See NIV)
Exodus 12:23 For the LORD will pass through to smite the Egyptians; and when He seeth the blood upon the lintel, and on the two side-posts, the LORD will pass over the door, and will not suffer the destroyer to come in unto your houses to smite you. (See NIV)
Ezekiel 41:21 As for the temple, the door posts were squared; and as for the face of the sanctuary, the appearance of it was as the appearance of the temple. (See NIV)