'Certainly' in the Bible

How do ye say, We are wise, and the law of the LORD is with us? Lo, certainly in vain made he it; the pen of the scribes is in vain.

Therefore thou shalt speak unto them this word; Thus saith the LORD God of Israel, Every bottle shall be filled with wine: and they shall say unto thee, Do we not certainly know that every bottle shall be filled with wine?

And it shall be, if they refuse to take the cup at thine hand to drink, then shalt thou say unto them, Thus saith the LORD of hosts; Ye shall certainly drink.

And thou shalt say to Jehoiakim king of Judah, Thus saith the LORD; Thou hast burned this roll, saying, Why hast thou written therein, saying, The king of Babylon shall certainly come and destroy this land, and shall cause to cease from thence man and beast?

And said unto him, Dost thou certainly know that Baalis the king of the Ammonites hath sent Ishmael the son of Nethaniah to slay thee? But Gedaliah the son of Ahikam believed them not.

The LORD hath said concerning you, O ye remnant of Judah; Go ye not into Egypt: know certainly that I have admonished you this day.

Now therefore know certainly that ye shall die by the sword, by the famine, and by the pestilence, in the place whither ye desire to go and to sojourn.

But we will certainly do whatsoever thing goeth forth out of our own mouth, to burn incense unto the queen of heaven, and to pour out drink offerings unto 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 victuals, and were well, and saw no evil.