I really like this from from today’s Our Daily Bread…

Moses, though now recognized as a great man of faith, also committed a shocking crime. After he witnessed “an Egyptian beating a Hebrew,” he looked “this way and that” and “killed the Egyptian” (Exodus 2:11–12). Despite this sin, God in His grace wasn’t done with His imperfect servant. Later, He chose Moses to free His people from their oppression (3:10). In Romans 5:14, we read, “Death reigned from the time of Adam to the time of Moses, even over those who did not sin by breaking a command.” But in the following verses Paul states that “God’s grace” makes it possible for us, regardless of our past sins, to be changed and made right with Him (vv. 15–16).

We might think that what we’ve done disqualifies us from knowing God’s forgiveness and being used for His honor. But because of His grace, in Jesus we can be changed and set free to help others be changed for eternity.