'In Me' in the Bible

I know thy works, and where thou dwellest, even where the throne of satan is: thou maintainest my name, and hast not renounced your faith in me, even at a time when Antipas my faithful martyr was slain among you, where Satan dwells.

immediately having took the little book out of the angel's hand, I swallowed it down: and in my mouth it was as sweet as honey: but as soon as I had swallowed it, it was bitter within me.