 Suddenly the glory of God appeared before Isaiah the prophet. He saw heavenly creatures and the train of God's robe fill the temple. In that glorious moment, with heaven open before him, Isaiah turned his focus upon himself and he became afraid. It's all over. I am doomed for I am a sinful man. I have filthy lips and I live among a people with filthy lips. When you draw closer to God, the light of his holiness exposes your flaws in greater details. Isaiah recognized his own flaws and immediately felt guilt. His past distracted him from his prophetic purpose. So what did God do? God allowed a seraphim to cleanse Isaiah's mouth. And the very thing Isaiah thought disqualified him, God used. Of course, God doesn't tolerate sin in our lives, but once we have truly repented and allowed him to truly cleanse us, we can step into our callings. Your past cannot prevent your purpose.