"For they being ignorant of God's righteousness, and going about to establish their own righteousness, have not submitted themselves unto the righteousness of God" (Romans 10:3).
“How can ye believe, which receive honour one of another, and seek not the honour that cometh from God only?”
And JESUS said: “there is one that accuseth you, even MOSES, in whom ye trust” (John 5:45).
And Moses by the Spirit of God immediately REPEATS this; he is talking about the Messiah, the Christ to come:
This "Prophet" is the Messiah, who is the Lord Jesus Christ.
We cannot approach God apart from this Jesus.
Mark 10:45 For even the Son of man came not to be ministered unto, but to minister, and to give his life a ransom for many.
We have NOTHING apart from faith in this Jesus: Romans 4:25 Who was delivered for our offences, and was raised again for our justification.
Jesus said, “For had ye believed Moses, ye would have believed Me: for he wrote of Me” (John 5:46).
Romans 10:4 For Christ is the [goal] of the law for righteousness to every one that believeth.
“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” (Romans 10:9).
Romans 10:10 For with the heart man believeth [on JESUS] unto righteousness; and with the mouth confession is made unto salvation.
But we have what is most precious and sure—the Lord Jesus Christ: Romans 10:11 For the scripture saith, Whosoever believeth on him shall not be ashamed.
Isaiah 28:16 Therefore thus saith the Lord GOD, Behold, I lay in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure foundation: he that believeth shall not make haste.