11:28 celebrated: Here and ver. 17, as to the offering up Isaac, the verbs are in the perfect; this is remarkable. The other facts are generally passing facts, part of the whole history; these are of standing significance, either figuratively setting the believer on a new ground, or viewed as continued till the time of the epistle: 'by faith Abraham has offered,' 'by faith he has celebrated;' only this is not possible in English. It was not external continuance, for the blood sprinkling was only once.