And thou shalt say to Jehoiakim king of Judah, Thus saith the LORD; Thou hast burned this roll, saying, Why hast thou written therein, saying, The king of Babylon shall certainly come and destroy this land, and shall cause to cease from thence man and beast?
Say to Jehoiakim - not in person, as Jeremiah was 'hidden' (Jeremiah 36:26), but by the written word prophecy.
Thou hast burned the roll, saying, Why hast thou written therein ... the king of Babylon shall ... destroy this land. This is what the king had desired to be said to Jeremiah if he should be found: kings often dislike the truth to be told to them.