'Certain' in the Bible

And the dove came back at evening, and in her mouth was an olive-leaf broken off: so Noah was certain that the waters had gone down on the earth.

And I am certain that when the men of Egypt see you, they will say, This is his wife: and they will put me to death and keep you.

And he said, O Lord God, how may I be certain that it will be mine?

So now, give the man back his wife, for he is a prophet, and let him say a prayer for you, so your life may be safe: but if you do not give her back, be certain that death will come to you and all your house.

And he said, Let not your hand be stretched out against the boy to do anything to him; for now I am certain that the fear of God is in your heart, because you have not kept back your son, your only son, from me.

Now, may the girl to whom I say, Let down your vessel and give me a drink, and who says in answer, Here is a drink for you and let me give water to your camels: may she be the one marked out by you for your servant Isaac: so may I be certain that you have been good to my master Abraham.

And coming to a certain place, he made it his resting-place for the night, for the sun had gone down; and he took one of the stones which were there, and putting it under his head he went to sleep in that place.

And there he saw the daughter of a certain man of Canaan named Shua, and took her as his wife.

And this dream came to Pharaoh twice, because this thing is certain, and God will quickly make it come about.

And the ruler of the land said, In this way I may be certain that you are true men; let one of you be kept here with me, while you go and take grain for the needs of your families;

And come back to me with your youngest brother: then I will be certain that you are true men, and I will give your brother back to you and let you do trade in the land.