James 3:2

2 For we all stumble in many things. If anyone does not stumble in word, he is a perfect* man, able also to bridle the whole body.

Matthew 5:44-48

44 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, 45 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. 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 greet your brethren only, what do you do more than others? Do not even the tax collectors do so? 48 Therefore you shall be perfect, just as your Father in heaven is perfect*.

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*Perfect Man= He is complete, spiritual mature, godly. We show marks of spiritual maturity.