When the Messiah spoke about the soul being perfected, one has to realize that he is speaking to Israel in term of the Law of Moses. One of the first accounts of a man being perfect before Yahweh is Noah and Abram. Moses wrote in Genesis:“… Noah was a just man and perfect in his generations, and Noah walked with Elohim (God, Gen 6:9).” Abram was also considered perfect by Yahweh Elohim, for Moses wrote: “And when Abram was ninety years old and nine, Yahweh (the LORD) appeared to Abram, and said unto him, I am the Almighty God; walk before me, and be thou perfect (Gen. 17:1).”
Now one may ask: what does it mean to be “perfect with Yahweh?” Obviously it cannot mean that a man is infallible in judgments and perfect in his actions. If this were the case then man would not need a savior.
Now the Hebrew word for ’perfect’ is ‘tamiym’ (taw-meem’); from OT:8552; entire (literally, figuratively or morally); also (as noun) integrity, truth: OT:8549 (Biblesoft’s New Exhaustive Strong’s Numbers and Concordance with Expanded Greek-Hebrew Dictionary. Copyright (c) 1994, Biblesoft and International Bible Translators, Inc.). The Hebrew word ‘tamiym’ is also used in the King James Version of the Bible to mean - without blemish, complete, full, perfect, sincerely (-ity), sound, without spot, undefiled, upright (-ly), whole.
In the New Testament which was written in Greek the word for perfect is ‘teleios’ (tel’-i-os); from NT:5056; complete (in various applications of labor, growth, mental and moral character, etc.); neuter (as noun, with NT:3588) completeness: Biblesoft’s New Exhaustive Strong’s Numbers and Concordance with Expanded Greek-Hebrew Dictionary. (Copyright (c) 1994, Biblesoft and International Bible Translators, Inc.)
Perfection of mankind with Yahweh refers to the integrity of the heart and obedience to the truth of His words. It is from the heart and mind that man’s actions are made manifest. So if the heart and mind is truthful then the action is truthful. In the case with Noah and Abraham it was their belief in Yahweh that made them perfect.
http://www.plim.org/Perfect.htm
But seek first his kingdom and his righteousness,
and all these things will be given to you as well.