God hand selects Perez – the illegitimate son from an illicit affair between a father-in-law and daughter-in-law dressed up as a harlot – to be a part of His plan to redeem the world.
God deliberately gets His hands dirty by molding Judah’s mess into a conduit of grace, because God is in the business of working through our messes. Grace does not mean that God encourages sin or discourages righteousness. Not at all (Romans 6:1-2). Nor does it mean that God saves people apart from faith in Christ. But it does mean that no mess, no failure, no broken marriage, no affair, no night with a prostitute can prevent God from using you – an image bearing masterpiece, frail and flawed, forever loved.
– Sprinkle, Preston; Charis: God’s Scandalous Grace for Us; David C. Cook Publishing; Colorado Springs, CO; Kindle version; copyright 2014; page 62