'Sure' in the Bible

The Lord said, "The men of Judah should take the lead. Be sure of this! I am handing the land over to them."

Call judgment down on Meroz,' says the Lord's angelic messenger; 'Be sure to call judgment down on those who live there, because they did not come to help in the Lord's battle, to help in the Lord's battle against the warriors.'

Look, I am putting a wool fleece on the threshing floor. If there is dew only on the fleece, and the ground around it is dry, then I will be sure that you will use me to deliver Israel, as you promised."

So be sure that you don't drink wine or anything intoxicating, and don't eat anything unclean

He told me, "Surprise! you're going to conceive and give birth to a son!' and as for you, "Be sure that you don't drink wine or anything intoxicating, and don't eat anything unclean,' "because the young man will be a Nazirite dedicated to God from inside the womb' until the day he dies."

Then Manoah told his wife, "We're going to die for sure, because we've seen God!"

“I was sure you hated her,” her father said, “so I gave her to one of the men who accompanied you. Isn’t her younger sister more beautiful than she is? Why not take her instead?”

They continued, "Let's make sure that there's an inheritance for the survivors of the tribe of Benjamin, so that a tribe won't be blotted out from Israel.