'Certainly' in the Bible

Does a bird fall into a trapping net on the earth when there is no snare for it? Does a trapping net spring up from the ground unless it has certainly caught something?

But do not seek Bethel or go [to] Gilgal or cross over to Beersheba, for Gilgal will certainly go into exile and Bethel will come to disaster."

For this Amos has said, 'Jeroboam will die by the sword and Israel will certainly go into exile [away] from his land.'"