God would not have asked us to be perfect if
He knew it is not attainable? God’s standard
is “Be perfect,” not “be sinless”. Perfection
here simply means maturity in Christ. It is
about striving to grow into the full stature of
Christ. Thus, it begins with accepting Jesus
as your Lord and Saviour. It is only in Christ
Jesus that you can be perfect.

Be perfect, therefore, as your heavenly
Father is perfect. (Matthew 5:48 NIV)

A person, seeking to be perfect, will always
strive to mature in Christ. When he/she does
any wrong, he/she gives no excuse; rather
he/she confesses, apologises, repents and
moves on to do that which is right in the
sight of God.