Gen 17:7, And I will establish My covenant between Me and you and your descendants after you in their generations, for an EVERLASTING COVENANT, TO BE GOD TO YOU AND YOUR DESCENDANTS AFTER YOU.
Jer 33:20-21, “Thus says the LORD: ‘IF YOU CAN BREAK MY COVENANT WITH THE DAY and MY COVENANT WITH THE NIGHT, so that there will not be day and night in their season, THEN MY COVENANT MAY ALSO BE BROKEN WITH DAVID MY SERVANT…
As long as we see the sun, the moon and the stars in the sky HIS Covenant remains with the Jewish nation! NO REPLACEMENT THEOLOGY!
Gen 17:16-17, And I will bless her AND ALSO GIVE YOU A SON BY HER; …Then Abraham fell on his face and laughed, and said in his heart, “Shall a child be born to a man who is one hundred years old? And shall Sarah, who is ninety years old, bear a child?”
Rom 4:19, AND NOT BEING WEAK IN FAITH, he did not consider his own body, already dead (since he was about a hundred years old), and the deadness of Sarah’s womb.
Looks like Abram laughed in unbelief yet, this is not the case! He knew it was impossible for them to have children But WITH GOD ALL THINGS ARE POSSIBLE FOR THOSE THAT BELIEVE IN HIM!