Ezekiel 43:20

43:20 You will take some of its blood, and place it on the four horns of the altar, on the four corners of the ledge, and on the border all around; you will cleanse it and make atonement for it.

Ezekiel 46:22

46:22 In the four corners of the court were small courts, 70 feet in length and 52½ feet in width; the four were all the same size.