Treasury of Scripture Knowledge
But now hath he obtained a more excellent ministry, by how much also he is the mediator of a better covenant, which was established upon better promises.
For if that first Agreement had been faultless, then there would have been no need for a second one.
2 Corinthians 3:6
He has also made us competent as ministers of a New Agreement [i.e., between Himself and mankind]. It is not [an agreement] based [merely] on a written document [i.e., such as the law of Moses], but on the Holy Spirit, for the written document brings [spiritual] death [See Rom. 8:2], but the Holy Spirit brings [never ending] life.
So therefore, Jesus has become the guarantee of a better Agreement [between God and mankind].
Therefore, Christ is the Mediator of a New Agreement, so that [all] those people who have been called [by God] can receive the promise of the never ending inheritance. [This is possible because] a death has taken place for the redemption of [people's] sins who lived under the first Agreement.
For this is the Agreement that I will make with the people of Israel in the coming days, says the Lord: I will put my laws into their minds, and I will also write them on their hearts. And I will be their God and they will be my people.
the Israelites. These people are God's adopted children; they have [experienced] His glorious presence; they have [received] His Agreements; they have been given the law of Moses; they possess the [Temple] service and the promises [of God].
Now [specific] promises were made to Abraham and to his seed [i.e., descendants]. [God] did not say "seeds" [plural] as though He were referring to many persons but "seed" [singular] showing that He meant one [descendant]; [Gen. 13:15 says] "And to your seed," referring to Christ.
[and provides] hope for never ending life. God, who cannot lie, promised this [life] before the beginning of time,
2 Peter 1:4
By these [blessings] He has given to us the precious and tremendous promises, so that you people may share in His divine nature, [after] having escaped the world's corruption, caused by evil desires.