Strangers - foreigners: the Syrians and Assyrians (2Ki 13:7; 2Ki 15:19, 2Ki 15:20; 2Ki 17:3-6).
gray hairs - that is, symptoms of approaching national dissolution.
are here and there upon - literally, “are sprinkled on” him.
yet he knoweth not - Though old age ought to bring with it wisdom, he neither knows of his senile decay, nor has the true knowledge which leads to reformation.