Mat Matthew, chapter The Gospel According to Matthew, chapter 5
Grow up and become completely trustworthy,5:48. Literally, “perfect, complete, undivided, whole, mature.” The idea here is of a way of life totally dedicated to God rather than focusing on some abstract concept of perfection. The focus is on spiritual maturity which translates into being someone dependable, someone who can always be trusted. just as your heavenly Father is trustworthy.”