'Peradventure' in the Bible

For I have heard the defaming of many, terror on every side. Denounce, and we will denounce him,'say all my familiar friends, they that watch for my fall; peradventure he will be persuaded, and we shall prevail against him, and we shall take our revenge on him.

Inquire, I pray thee, of Jehovah for us; for Nebuchadrezzar king of Babylon maketh war against us: peradventure Jehovah will deal with us according to all his wondrous works, that he may go up from us.