Anointing with oil was a custom among the Hebrews and other oriental nations. 
<p>Behold, how good and how pleasant it is For brethren to dwell together in unity! It is like the precious oil upon the head, That ran down upon the beard, Even Aaron's beard; That came down upon the skirt of his garments. Psalm 133:1-2 ASV

Anointing

Anointing with oil was a custom among the Hebrews and other oriental nations. Behold, how good and how…