Isaac's redemption and substitution took just a matter of minutes and was provided by God.

At the first Passover, the quantity God provided for was substantial, but His redemption from the overflight of the death angel was only extended to firstborns - and only for an evening.

At Leviticus 23, God sets forth a means by which the entire tribe (that participates) can receive atonement for an interval of one year. Through the ceremonial action of one, and the shed blood of an innocent animal, and the substitution of a scapegoat, the entire tribe can be redeemed for one year.

While expanding the quantity of eligibles and the duration of His provision, God has foreshadowed a redemption that will be available to mankind....forever.