>> Still?
Absolutely. GOD is Faithful and True to keep His covenants forever.
>> But go rather to the lost sheep of the house of Israel.
Bringing the Gospel of CHRIST to the lost sheep of Israel IS blessing Israel. I fail to see your point. Read Romans 11. Better yet, read the entire book of Romans.
Or maybe you’re just one of those Jew-haters for whom there is no understanding. If so, I can’t help you past your blindness. Carry on in fear and trembling.
God fulfilled the covenant in full with the dawn of the new and eternal covenant of forgiveness and salvation through the death and resurrection of our Savior, Jesus Christ.
The Jewish people completed their part of this mission and are welcome to enter into the new and eternal covenant through Jesus.