'Certainty' in the Bible

I tell all of you with certainty, people will be forgiven their sins and whatever blasphemies they utter.

Now about 4,000 men were there. Then he sent them on their way.

He sighed deeply in his spirit and remarked, "Why do those living today demand a sign? I tell all of you with certainty, no sign will be given to this generation."

I tell all of you with certainty, whoever gives you a cup of water to drink because you belong to the Messiah will never lose his reward."

I tell all of you with certainty, whoever doesn't receive the kingdom of God as a little child will never enter it."

Jesus said, "I tell all of you with certainty, there is no one who has left his home, brothers, sisters, mother, father, children, or fields because of me and the gospel

I tell all of you with certainty, if anyone says to this mountain, "Be lifted up and thrown into the sea,' if he doesn't doubt in his heart but believes that what he says will happen, it will be done for him.

He called his disciples and told them, "I tell all of you with certainty, this destitute widow has dropped in more than everyone who is contributing to the offering box,

I tell all of you with certainty, this generation will not disappear until all these things take place.

I tell all of you with certainty, wherever the gospel is proclaimed in the whole world, what she has done will also be told as a memorial to her."

While they were at the table eating, Jesus said, "I tell all of you with certainty, one of you is going to betray me, one who is eating with me."

I tell all of you with certainty, I'll never again drink the product of the vine until that day when I drink it new in the kingdom of God."

Jesus told him, "I tell you with certainty, today, this very night, before a rooster crows twice, you'll deny me three times."