'Sure' in the Bible

When you hear the sound of marching coming from the tops of the balsam trees, then be sure to act quickly, since the LORD will have gone out ahead of you to cut down the Philistine army."

David responded to the messenger, "Here's what you're to tell Joab: "Don't be troubled by this incident, because the battle sword consumes one or another from time to time. Consolidate your attack against the city and conquer it.' Be sure to encourage him."

"Are things fine with respect to the young man Absalom?" the king asked. Ahimaaz answered, "I saw a lot of confusion about the time Joab was getting ready to send the king's courier and me, your servant, but I'm not sure what was going on."