Oh, please.
Have you never read the following?
Deuteronomy chapter 30
[6] And the LORD thy God will circumcise thine heart, and the heart of thy seed, to love the LORD thy God with all thine heart, and with all thy soul, that thou mayest live.
[7] And the LORD thy God will put all these curses upon thine enemies, and on them that hate thee, which persecuted thee.
[8] And thou shalt return and obey the voice of the LORD, and do all his commandments which I command thee this day.
[9] And the LORD thy God will make thee plenteous in every work of thine hand, in the fruit of thy body, and in the fruit of thy cattle, and in the fruit of thy land, for good: for the LORD will again rejoice over thee for good, as he rejoiced over thy fathers:
[10] If thou shalt hearken unto the voice of the LORD thy God, to keep his commandments and his statutes which are written in this book of the law, and if thou turn unto the LORD thy God with all thine heart, and with all thy soul.
[11] For this commandment which I command thee this day, it is not hidden from thee, neither is it far off.
[12] It is not in heaven, that thou shouldest say, Who shall go up for us to heaven, and bring it unto us, that we may hear it, and do it?
[13] Neither is it beyond the sea, that thou shouldest say, Who shall go over the sea for us, and bring it unto us, that we may hear it, and do it?
[14] But the word is very nigh unto thee, in thy mouth, and in thy heart, that thou mayest do it.
Not only did Moses instruct the Israelites that "the LORD thy God will circumcise thine heart", BUT HE ALSO PREACHED UNTO THEM THE SAME EXACT GOSPEL THAT PAUL PREACHED, even as I've shown you before.
Read verses 11 through 14, and then compare them to what Paul said here:
Romans chapter 10
[6] But the righteousness which is of faith speaketh on this wise, Say not in thine heart, Who shall ascend into heaven? (that is, to bring Christ down from above)
[7] Or, Who shall descend into the deep? (that is, to bring up Christ again from the dead)
[8] But what saith it? The word is nigh thee, even in thy mouth, and in thy heart: that is, the word of faith, which we preach;
[9] That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
[10] For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
"The word of faith" which Paul and others preached is EXACTLY what Moses preached to the children of Israel.
That's not my opinion.
Instead, it's EXACTLY what Paul himself said.