'Certainly' in the Bible

{You must certainly circumcise} {the servant born in your house and the one bought from any foreigner}. And my covenant shall be with your flesh as an everlasting covenant.

And he said, "I will certainly return to you {in the spring}, and look, Sarah your wife [will have] a son." Now Sarah [was] listening at the doorway of the tent, and which [was] behind him.

So now, return the wife of the man, for he [is] a prophet, so that he will pray for you and you will live. And {if you do not return her}, know that you will certainly die, and all that [are] yours."

that I will certainly bless you and greatly multiply your offspring as the stars of heaven, and as the sand that is by the shore of the sea. And your offspring will take possession of the gate of his enemies.

Then Abimelech instructed all the people, saying, "The [one who] touches this man or his wife shall certainly die."

And this stone that I have set up [as] a pillar shall be the house of God, and [of] all that you give to me I will certainly give a tenth to you."

Is this not that from which my master drinks? Now he himself certainly practices divination with it. You have done evil [in] what you have done.'"

And Joseph said to his brothers, "I [am about] to die, but God will certainly visit you and bring you up from this land to the land that he swore to Abraham, to Isaac, and to Jacob."