'Really' in the Bible

and they said to the woman, "We no longer believe in Him simply because of your statements; for we have now heard for ourselves, and we know that this man really is the Saviour of the world."

but I know you well, and I know that in your hearts you do not really love God.

But here he is, speaking openly and boldly, and they say nothing to him! Can the Rulers really have ascertained that this man is the Christ?

Are you really greater than our forefather Abraham? For he died. And the prophets died. Who do you make yourself out to be?"