'Secretly' in the Bible

Zedekiah the king sent and brought him out; and in his palace the king secretly asked him, “Is there any word from the Lord?” And Jeremiah said, “There is!” Then he said, “You will be handed over to the king of Babylon.”

But King Zedekiah swore secretly to Jeremiah, “As the Lord lives, who made our lives, be assured that I will not put you to death or put you into the hand of these men who are seeking your life.”

Then Johanan the son of Kareah spoke secretly to Gedaliah in Mizpah, saying, “Let me go and kill Ishmael the son of Nethaniah, and not a man will know [who is responsible]. Why should he kill you and cause all the Jews who are gathered near you to be scattered and the remnant of Judah to perish?”