'Assure' in the Bible

I assure you: People will be forgiven for all sins and whatever blasphemies they may blaspheme.

But sighing deeply in His spirit, He said, “Why does this generation demand a sign? I assure you: No sign will be given to this generation!”

Then He said to them, “I assure you: There are some standing here who will not taste death until they see the kingdom of God come in power.”

And whoever gives you a cup of water to drink because of My name, since you belong to the Messiah—I assure you: He will never lose his reward.

I assure you: Whoever does not welcome the kingdom of God like a little child will never enter it.”

“I assure you,” Jesus said, “there is no one who has left house, brothers or sisters, mother or father, children, or fields because of Me and the gospel,

I assure you: If anyone says to this mountain, ‘Be lifted up and thrown into the sea,’ and does not doubt in his heart, but believes that what he says will happen, it will be done for him.

Summoning His disciples, He said to them, “I assure you: This poor widow has put in more than all those giving to the temple treasury.

I assure you: This generation will certainly not pass away until all these things take place.

I assure you: Wherever the gospel is proclaimed in the whole world, what this woman has done will also be told in memory of her.”

While they were reclining and eating, Jesus said, “I assure you: One of you will betray Me—one who is eating with Me!”

I assure you: I will no longer drink of the fruit of the vine until that day when I drink it in a new way in the kingdom of God.”

“I assure you,” Jesus said to him, “today, this very night, before the rooster crows twice, you will deny Me three times!”