While the Lord Jesus did not specifically call any one person perfect, He did speak of perfect people. Here are a couple of instances:

Matthew 5:48, “Be ye therefore perfect, even as your Father which is in heaven is perfect.”

John 17:22-23, “And the glory which thou gavest me I have given them; that they may be one, even as we are one: I in them, and thou in me, that they may be made perfect in one; and that the world may know that thou hast sent me, and hast loved them, as thou hast loved me.”

We might wonder how the Lord Jesus could refer to some as being perfect, or how the Lord expects us to be perfect. Especially when we consider such verses as Psalms 14:2-3 which says, “The LORD looked down from heaven upon the children of men, to see if there were any that did understand, and seek God. They are ALL GONE ASIDE, they are ALL TOGETHER BECOME FILTHY: there is NONE THAT DOETH GOOD, no, not one.” Romans 3:10 says, “As it is written, There is NONE RIGHTEOUS, no, not one.” Even though the Lord called Job “a perfect and an upright man” (Job 1:8), certainly he was a sinner just like the rest of us.

In Matthew 5:48 and John 17:23 the Greek word translated ‘perfect’ is “teleios”, which means complete, of full age, or mature. So, the Lord is not speaking of us being sinless or faultless. In this context, to be perfect means to be mature as a Christian so that we might imitate our God and show forth His excellent glory. (Read 2 Peter 1:17).

We see that same Greek word used in Hebrews 10:14, “For by one offering he hath perfected for ever them that are sanctified.” Here, considering the context, we can see that we have been made ‘complete’ in Christ Jesus. We read in Colossians 2:9-10, “For in him (Christ) dwelleth all the fulness of the Godhead bodily. And ye are complete in him, which is the head of all principality and power.”

So, while the Lord does not speak of any of us as being sinless or faultless, He does speak of us as mature or complete. Of course, in a practical sense, we who know Christ as our savior, are positionally perfect or righteous before God. We are told in 2 Corinthians 5:21, “For he (God) hath made (Christ) him to be sin for us, who knew no sin; THAT WE MIGHT BE MADE THE RIGHTEOUSNESS OF GOD IN HIM.” (322.2)