'Certainly' in the Bible

and Joshua saith, 'By this ye know that the living God is in your midst, and He doth certainly dispossess from before you the Canaanite, and the Hittite, and the Hivite, and the Perizzite, and the Girgashite, and the Amorite, and the Jebusite:

And they answer Joshua and say, 'Because it was certainly declared to thy servants, that Jehovah thy God commanded Moses His servant to give to you all the land, and to destroy all the inhabitants of the land from before you; and we fear greatly for ourselves because of you, and we do this thing;

know certainly that Jehovah your God is not continuing to dispossess these nations from before you, and they have been to you for a gin, and for a snare, and for a scourge, in your sides, and for thorns in your eyes, till ye perish from off this good ground which Jehovah your God hath given to you.