'Marking' in the Bible

How long [O Lord] must I see the banner [marking the way for flight]And hear the sound of the trumpet [urging the people to run for safety]?

I will say, 'My dear children of Israel, keep in mind the road you took when you were carried off. Mark off in your minds the landmarks. Make a mental note of telltale signs marking the way back. Return, my dear children of Israel. Return to these cities of yours.