'Certainly' in the Bible

Therefore you shall speak to them this word: Thus says Yahweh, the God of Israel, Every bottle shall be filled with wine: and they shall tell you, Do we not certainly know that every bottle shall be filled with wine?

Yahweh said, Most certainly I will strengthen you for good; most certainly I will cause the enemy to make supplication to you in the time of evil and in the time of affliction.

Concerning Jehoiakim king of Judah you shall say, Thus says Yahweh: You have burned this scroll, saying, Why have you written therein, saying, The king of Babylon shall certainly come and destroy this land, and shall cause to cease from there man and animal?

Yahweh has spoken concerning you, remnant of Judah, Don't you go into Egypt: know certainly that I have testified to you this day.

Now therefore know certainly that you shall die by the sword, by the famine, and by the pestilence, in the place where you desire to go to live there.

But we will certainly perform every word that is gone forth out of our mouth, to burn incense to the queen of the sky, and to pour out drink offerings to her, as we have done, we and our fathers, our kings and our princes, in the cities of Judah, and in the streets of Jerusalem; for then had we plenty of food, and were well, and saw no evil.

For thus says Yahweh: Behold, they to whom it didn't pertain to drink of the cup shall certainly drink; and are you he who shall altogether go unpunished? You shall not go unpunished, but you shall surely drink.