Ezekiel 9:2

And, behold, six (b) men came from the way of the higher gate, which lieth toward the (c) north, and every man a slaughter weapon in his hand; and one man among them [was] clothed with linen, with a writer's (d) inkhorn by his side: and they went in, and stood beside the brasen altar.

(b) Which were angels in the appearance of men.

(c) Signifying that the Babylonians would come from the north to destroy the city and the temple.

(d) To mark them that would be saved.