TSK · Hebrews 8:6

who are Israelites; whose is the adoption, the glory, the covenants, the giving of the law, the service, and the promises;

Now the promises were spoken to Abraham and to his seed. He doesn't say, "To seeds," as of many, but as of one, "To your seed," which is Christ.

By so much, Jesus has become the collateral of a better covenant.

For this reason he is the mediator of a new covenant, since a death has occurred for the redemption of the transgressions that were under the first covenant, that those who have been called may receive the promise of the eternal inheritance.

by which he has granted to us his precious and exceedingly great promises; that through these you may become partakers of the divine nature, having escaped from the corruption that is in the world by lust.