Romans 4:14-16 — For if they which are of the law be heirs, faith is made void, and the promise made of none effect:
Because the law worketh wrath: for where no law is, there is no transgression.
Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham; who is the father of us all.
of no effect — because nobody could keep the law
wrath — failure to keep the law brings on the wrath of God.
grace — there is no merit in faith. The promise, faith and grace are contrasted with the law, works and merit.
The promise will be given to the Jews, but by faith, not by the law.
Abraham is the father of all who take God at His Word.