The facts are staring right into our eyes.
All quotes are from NIV.
Romans 10:
5Moses describes in this way the righteousness that is by the law:
"The man who does these things will live by them."[a] 6But the
righteousness that is by faith says: "Do not say in your heart,
'Who will ascend into heaven?'" (that is, to bring Christ down)
7"or 'Who will descend into the deep?'[c]" (that is, to bring
Christ up from the dead). 8But what does it say? "The word
is near you; it is in your mouth and in your heart,"[d]
that is, the word of faith we are proclaiming: 9That if you confess
with your mouth, "Jesus is Lord," and believe in your heart that
God raised him from the dead, you will be saved. 10For it is with
your heart that you believe and are justified, and it is with your
mouth that you confess and are saved. 11As the Scripture says,
"Anyone who trusts in him will never be put to shame."[e] 12For
there is no difference between Jew and GentileĀthe same Lord is
Lord of all and richly blesses all who call on him, 13for,
"Everyone who calls on the name of the Lord will be saved."[f]
Footnote D points to Deut. 30:14.
11 Now what I am commanding you today is not too difficult for
you or beyond your reach. 12 It is not up in heaven, so that you
have to ask, "Who will ascend into heaven to get it and proclaim it
to us so we may obey it?" 13 Nor is it beyond the sea, so that you
have to ask, "Who will cross the sea to get it and proclaim it to
us so we may obey it?" 14 No, the word is very near you; it
is in your mouth and in your heart so you may obey it.
May I know why did Paul leave out the most crucial phrase?

Did he deliberately misuse and misquote Scripture to further his
own agenda?