'Surface' in the Bible

And he shall examine the infection, and {if} the infection on the house's wall [has] yellowish-green or reddish spots and its appearance [is] deeper than [the surface of] the wall,

And he shall take {some of} the bull's blood, and he shall spatter [it] with his finger on the atonement cover's surface on the eastern [side], and {before} the atonement cover he shall spatter {some of} the blood with his finger seven times.