There are many reasons why God wouldn't want to use people like you or me. But don't worry, God has a heart for losers. Insulted? Don't be. Moses stuttered. David's armor didn't fit. Paul rejected John Mark. Hosea's wife was a prostitute. Amos' only training was in the school of pain. Solomon was too rich. Abraham was too old. David was too young. Timothy had ulcers. Peter was afraid of death. Lazarus was dead. John was self-righteous. Naomi was a widow. Paul was a murderer. So was Moses. Jonah ran from God. Miriam was a gossip. Gideon and Thomas both doubted. Jeremiah was depressed and suicidal. Elijah was burned out. John the Baptist was a loudmouth. Martha was a worrywart. Mary was lazy. Samson was rebellious. Noah got drunk.
Did I mention that Moses had a short fuse? So did Peter and Paul - well, lots of folks did. God doesn't require a job interview. He doesn't hire and fire like most bosses, because He's more our Dad than our boss. God doesn't look at financial gain or loss. He's not prejudiced or partial, not judging, grudging, sassy, or brassy, not deaf to our cry, nor blind to our need.
As much as we try to make a profit of them, God's gifts are free. We could do wonderful things for wonderful people, and still not be wonderful people ourselves. The Accuser says, "You're not worthy." Jesus says, "So what? I AM." The Accuser looks back and sees our mistakes. God looks back and sees the cross. He doesn't calculate what you did years ago or even days ago! Why, it's not even on His record. Sure, there are many reasons why God shouldn't want us. But just like a parent He is utterly in love with us. If we hunger for Him, if we are simply willing, He'll use us in spite of who we are or where we've been.