This word is difficult to render in English. It is a 'leader,' but it is more. It is used for one who begins and sets a matter on. The Greek word occurs four times in the New Testament, here and ch. 5.31; Heb. 2.10; 12.2. In Heb. 12.2 it means, 'he began and finished the whole course;' 'the origin' or 'originator,' though the word is harsh in connexion with life. The word is only used of our Lord.