Question for christians?

It is talking about the Jews The House of Israel...The Jews were God's people....vs the Gentiles who were non-believers and Pagans...ie)Roman followers. God is saying that He is making a new covenant OR a new set of laws for His people to follow...He is talking about conversion, of the Jews into Christians..."Forgive their iniquity and I will remember their sin no more." Here He is pledging in His new covenant to forgive sin rather than punish it. This was done through Jesus. Hope this helps.