How does Jesus's ministry of preaching the kingdom fulfill the Abrahamic covenant promises to Israel?

Les teaches that Jesus began His earthly ministry with the call to repent because the kingdom of heaven was at hand. He explains that this ministry was in fulfillment of the promises made to Israel through the Abrahamic covenant. The nation was in at least part of the promised land, though not all of it, and Jesus came to present Himself as their King. In chapter 9, Jesus went through all the cities and villages of Israel, teaching in their synagogues, preaching the gospel of the kingdom, and healing every sickness and disease. In chapter 10, after choosing the twelve, He commanded them not to go to the Gentiles or Samaritans, but only to the lost sheep of the house of Israel, showing the narrow focus of the covenant promises.