Elaborate if you want, point is there is at least an equally strong argument to say that Luke was Jewish/Hebrew. Logically, it seems to make more sense to conclude that Luke was Jewish/Hebrew as the entire rest of the Bible was written by people within that lineage (as noted, Job may have predated the actual Jewish people, but was most likely within the lineage that led to them). The Hebrew people are the chosen of God for many things, and it appears that included in that they are the people for whom He chose to pen His Word. If there is at least equal arguments for both sides, I choose to conclude that Luke was most likely Jewish, and it really doesn’t matter anyway. My salvation does not ride on Luke’s ethnicity, it rides on my faith in Yeshua and my response to His Word.