Hebrews 6:14 - Ellicott's Commentary On The Whole Bible

Saying. — The words of the oath itself, “By myself have I sworn, saith the Lord” (Genesis 22:16), are not repeated, because they are almost identical with the writer’s own words introducing the citation (Hebrews 6:13). It will be observed that one change is made — in the last word; for in Genesis we read, “I will multiply thy seed.” The alteration may be made for brevity, as the quotation is abridged; but it will be seen that the effect of it is to direct greater attention to the first words, and to fix the thought on the blessing promised to Abraham himself.