Given what, the New Covenant? You think Romans 10:8 is saying that?
Romans 10:6-8 is a paraphrase from Deut 30:11-14 and the reality of it.
For The word; Christ, to keep His commandments and statutes, and to turn unto the Lord with all thy heart and all our soul is very nigh unto us. It is in our hearts and in our mouths that we may do it. THAT IS THE FAITH in which we preach.
Rom 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)
Rom 10:7 Or, Who shall descend into the deep? (that is, to bring up Christ again from the dead.)
Rom 10:8 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;
Deut 30:10 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.
Deut 30:11 For this commandment which I command thee this day, it is not hidden from thee, neither is it far off.
Deut 30:12 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?
Deut 30:13 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?
Deut 30:14 But the word is very nigh unto thee, in thy mouth, and in thy heart, that thou mayest do it.
The Word being very nigh unto them. In their hearts and in their mouths is the same thing that was prophesied in Jeremiah and Ezekiel. And it is the circumcision that is mentioned in Deut 30:6.
Jer 31:33 But this shall be the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people.
Ezek 36:27 And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.
Deut 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.