Was Jesus perfect his entire life? - Isaiah 7 Was Jesus perfect his entire life? This passage seems to suggest otherwise. I've never had a good answer to this question when referring to this passage.


  Again the Lord spoke to Ahaz, “Ask a sign of the Lord your God; let it
  be deep as Sheol or high as heaven.” But Ahaz said, “I will not ask,
  and I will not put the Lord to the test.” And he said, “Hear then, O
  house of David! Is it too little for you to weary men, that you weary
  my God also? Therefore the Lord himself will give you a sign. Behold,
  the virgin shall conceive and bear a son, and shall call his name
  Immanuel. He shall eat curds and honey when he knows how to refuse the
  evil and choose the good. For before the boy knows how to refuse the
  evil and choose the good, the land whose two kings you dread will be
  deserted. The Lord will bring upon you and upon your people and upon
  your father's house such days as have not come since the day that
  Ephraim departed from Judah—the king of Assyria.”
  ~ Isaiah 7:10-17
In the passage you mention it never says Jesus sinned or did evil.  We can find the answer to that question in Hebrews 4:14-15


  Seeing then that we have a great High Priest who has passed through
  the heavens, Jesus the Son of God, let us hold fast our confession. 
  For we do not have a High Priest who cannot sympathize with our
  weaknesses, but was in all points tempted as we are, yet without sin.


More info here - http://www.amazingfacts.org/media-library/book/e/18/t/christs-human-nature.aspx