In

Do everything without grumbling or arguing, so that you may become blameless and pure, “children of God without fault in a warped and crooked generation.” Then you will shine among them like stars in the sky as you hold firmly to the word of life. — Philippians 2:14-16

Inserted, implanted, embedded, injected, introduced. Something foreign has been placed into a warped and crooked generation—something blameless and pure—a brilliant navigational reference set against the darkness.