How to use "faithfully" in a sentence

I therefore consider that, in view of the Constitution and the laws, the Union is unbroken; and to the extent of my ability I shall take care, as the Constitution itself expressly enjoins upon me, that the laws of the Union be faithfully executed in all the States

Is it possible, then, to make that intercourse more advantageous or more satisfactory after separation than before? Can aliens make treaties easier than friends can make laws? Can treaties be more faithfully enforced between aliens than laws can among friends? Suppose you go to war, you cannot fight always; and when, after much loss on both sides, and no gain on either, you cease fighting, the identical old questions as to terms of intercourse are again upon you.

I simply and faithfully carried out his last wish by smashing his head and right arm under the steam hammer of his brother's factory.

My hosts tried to change my mind but at last, promising faithfully to return to them, I went out again into the streets that had lately been so dark and strange and empty.