You have heard that it was said,
'love your neighbor and hate your
enemy.' But I say to you, love your
enemies, bless those who curse
you, do good to those who hate
you, and pray for those who
spitefully use you and persecute
you, that you may be sons of your
Father in heaven; for He makes
His sun rise on the evil and on
the good, and sends rain on the
just and on the unjust.
For if you love those who love
you, what reward have you?
Do not even the tax collectors
do the same? And if you greet
your brethren only, what do you
do more than others? Do not even
the tax collectors do so?
Therefore you shall be perfect,
just as your Father in heaven is perfect."
Jesus/Yesu3/Issa (Matt. 5:44–46)
Note that some translation like this
New King James version use "perfect" in the last sentence.
The original Aramaic actually more aptly refers to
"mature" or "grown" or "complete" rather than "perfect."