fulfilled] It was fulfilled before, Genesis 15:6. How then is it said here, that it was fulfilled at the oblation of Isaac, which was many yeares after? Thus; the truth of that which was verified before, was then again confirmed by a new and evident experiment; or it may be said to be fulfilled at Isaacs oblation, though fulfilled before, because Abraham was justified after the same manner through the whole course of his life. See Ver. 21.
Abraham] Genesis 15:6. Romans 4:3. Galatians 3:6.
friend] 2 Chronicles 20:7. Esther 41:8.