Deuteronomy 30:14
But the word is very nigh unto thee, in thy mouth, and in thy heart, that thou mayest do it.
As soon as I read this I was reminded, that these are the same verses that Paul was referring to in Romans 10. In both of these scriptures, the Bible is talking about the administration of God's Covenants. Here it is referring to the administration of the Old Covenant and in Romans the Administration of the New Covenant.
The Previous verse tells them they don't have to ascend into heaven, God came down and gave them this law of Love, neither do they have to sail across the seas, He has come to them and made his conditions known. Many confessed with their mouth but "Their hearts were far from Him." So it is today, that we have so many professing Christians but true religion is not just a matter of assenting to some truths and confessing them but they must be in the heart or they are of no effect. But If they are in the heart then the last part of our verse becomes a reality, "That thou mayest do them."
Not only was the Old Covenant to be obeyed, so must the gospel be obeyed, "But they have not all obeyed the gospel." (Rom 10:16). Not only was the Old Covenant a matter of life and death, but so is the New Covenant "He that believeth not is condemned already." Not only was the Old Covenant the Word come down, but so is the New Covenant, "The Word was made flesh and dwelt among us." Not only was the Old Covenant proven by outward confession and inward heart change so is the New Covenant, "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." (Rom 10:9)
The reason for all these similarities is that Jesus is the fulfillment of the Old and New Covenant. He, the Word, came down and fulfilled this law that Israel nor any other people could ever fulfill. He was the embodiment of Love and therefore could fulfill this law that hinged upon loving God and others perfectly. Dear Christian the Word is not far away, He is who we confess and who we possess. He enables us to do what he commands us to do, We can't love like we ought, obey like we ought, or give like we ought, but the Word, Jesus is nigh to every one of us.
Some have had life and death set before them as did Israel that day and have chosen to walk away from Christ, Perhaps their mouth confessed him but their heart was far away, this will prove itself over the years, they will go out from among us because they were never of us. Some of us on the other hand, turned to the Word come down, Jesus, Believed on him, confessed him, and the doing of this covenant, the righteousness of it, has been counted to us but is not of us. It is of the the one we believe in. Righteousness is not of the law but of faith, faith in the righteous one who fulfills and is always and always will be righteous, Jesus.
Dear reader, if you have never turned from your sins or your self-righteousness to Christ, he is not far away. He will come in and sup with you, You don't have to fly up to heaven or descend into the depths he is nigh! "This man receiveth sinners" and still to this day he is close to the penitent sinner, all heaven will rejoice upon his saving you.
Romans 10:5-10
5 For Moses describeth the righteousness which is of the law, That the man which doeth those things shall live by them. 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.