promise = the promise. See Gal_1:3, Gal_1:22, Gal_1:29.
immutability = unchangeableness. Greek. to ametatheton. The neut. of the adjective used as a noun. Here and in Heb_6:18. Figure of speech Antimereia. App-6(3).
counsel. Greek. boule.App-102.
confirmed it = intervened. Greek. mesiteuo. Only here. Compare Gal_1:3, Gal_1:19.