'Surface' in the Bible

He will examine it, and if the contamination in the walls of the house consists of green or red indentations that appear to be beneath the surface of the wall,

He is to take blood from the ox and sprinkle it with his forefinger toward the surface of the Mercy Seat. Then he is to sprinkle the blood on the surface of the Mercy Seat with his forefinger seven times.

"He is to slaughter the male goat as a sin offering for the people and bring its blood beyond the curtain and do with its blood as he did with the blood of the bull: He is to sprinkle it on the Mercy Seat that is, over the surface of the Mercy Seat.