Be perfect, therefore, as your heavenly Father is perfect (Matthew 5:28, HCSB)
Thomas Coke gives the following warning to be heeded as we discus being made perfect:
While we are definitely to strive for perfection in our conformity to the will of God (cf. 1 Peter 1:15-16), we must beware of the perils associated with perfectionism. Striving for an unattainable goal is difficult for anyone, but it is particularly frustrating for people with obsessive-compulsive personalities, people who tend to be perfectionists. In one sense a perfectionist is someone who strives for perfection, but in another sense it is someone who is obsessed with perfection. Such a person, for example, constantly cleans up his or her environment, straightens things that are not exactly straight, and corrects people for even minor mistakes. This type of striving for perfection is not godly. God does is not constantly “on the backs” of people who are less than perfect, and we should not be, either other people or ourselves. In fact, He gives us a great deal of “space” and is patient with us, allowing us to correct our own mistakes before He steps in to do so (cf. 1 Corinthians 11:31). It is possible for disciples of Jesus to become so obsessed with our own holiness that we shift our focus from Christ to ourselves. Rather we should keep our eyes on Jesus (Hebrews 12:1-3) more than on ourselves and on being perfect.