'Really' in the Bible

Is this really your boisterous city whose origins are in the distant past, and whose feet led her to a distant land to reside?

The sovereign master says, "These people say they are loyal to me; they say wonderful things about me, but they are not really loyal to me. Their worship consists of nothing but man-made ritual.

Certainly you have heard how the kings of Assyria have annihilated all lands. Do you really think you will be rescued?

They have burned the gods of the nations, for they are not really gods, but only the product of human hands manufactured from wood and stone. That is why the Assyrians could destroy them.

Is this really the kind of fasting I want? Do I want a day when people merely humble themselves, bowing their heads like a reed and stretching out on sackcloth and ashes? Is this really what you call a fast, a day that is pleasing to the Lord?