Daniel, a righteous man, had such devotion that you would not expect to find him repenting. Daniel’s heart, however, was sensitive to sin, and also he identified with the people’s sins.
“We have sinned and committed iniquity, we have done wickedly and rebelled, even by departing from your precepts and your judgments. Neither have we heeded your servants the prophets, who spoke in your name to our kings and our princes, to our fathers and all the people of the land. …O Lord, to us belongs shame of face, to our kings, our princes, and our fathers, because we have sinned against you” (Daniel 9:5-6,8, NKJV). Daniel repeatedly used the words “we,” “us,” “our.” He was saying, in essence, “Every one of us is affected.”

The key to it all is found in this verse: “Now while I was speaking, praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before the Lord my God for the holy mountain of my God…” (Daniel 9:20).

Daniel said, “God, deal with me while you are dealing with your people. If there is any iniquity in my heart, bring it out.”
Daniel was given new lips that had been touched by God’s purging hand. “Suddenly, one having the likeness of the sons of men touched my lips; then I opened my mouth and spoke…” (Daniel 10:16). Whenever Daniel spoke, he spoke as unto the Lord.

The prophet Isaiah was a godly man who had issued mighty prophecies, but when he stood before the Lord in all his holiness, this prophet could only say, “I am a man of unclean lips…” (Isaiah 6:5). God took coals of fire from the altar, put the tongs on Isaiah’s lips, and burned out all self and flesh, everything that was unlike him; then he gave Isaiah a new pair of lips. I believe the prophet never again had to have his lips purged.
God does this for every person who repents! Once your tongue and lips are purged, you will never again want to speak anything
that is unlike Jesus. The words that flow from you will be pure.