Matthew 5:46-48 Revised Standard Version Catholic Edition (RSVCE)
46 For if you love those who love you, what reward have you? Do not even the tax collectors do the same? 47 And if you salute only your brethren, what more are you doing than others? Do not even the Gentiles do the same? 48 You, therefore, must be perfect, as your heavenly Father is perfect.