God's ways are unlikely. Paul reminds us of this when he reminded the Corinthian believers of their own calling--not many of them were wise, strong, or of noble birth at their callings. They were chosen from unlikely backgrounds.
Even the death of Jesus plays into this. He became king only by dying. We are liberated through that death but in that liberation we become his subjects!
The unlikely act of God extends even further to us--we have been called by God from unlikely backgrounds to receive salvation; God has chosen us and given us an unlikely purpose--that through us, his glory will be seen; and he has changed us, taking our unlikely former lives in darkness and changing us to live in his light.