The observations I presented about Romans 10:9-13 are truthful, legal, valid, accurate, and legitimate; on the other hand, you violate truth by adding words to Romans 10:9-13 or subtracting words from Romans 10:9-13 scripture (Revelation 22:18-19), and here are your violations of truth:
1) With reference to Romans 10:9, you write "belief comes from the heart"; however, scripture states "believe in your heart". The difference is that (1) you state "comes from", but scripture states "in". A new heart is given by God (John 3:3, John 3:5, Ezekiel 36:26).
2) Since your post is about Romans 10:9-13, it appears that you are applying your final paragraph of "And not perishing if you believe, meaning put your belief and follow per the Greek, is called salvation. It can only be done in freewill or else it is meaningless" to Romans 10:9-13, and it is your final sentence of "It can only be done in freewill or else it is meaningless" which bears no resemblence to the passage of Romans 10:9-13 because:
- "believe in your heart" in Romans 10:9 contains no choice nor freewill indication,
- "with your heart that you believe and are justified" in Romans 10:10 contains no choice nor freewill indication,
- "Anyone who believes in him will never be put to shame" in Romans 10:11 contains no choice nor freewill indication.
Just in case your final paragraph was in reference to John 3:16, in John 3:16 there is no choice nor freewill indication. Behold, John 3:16 includes "that who ever believes in Him shall not perish", and the same Lord Jesus who said these words recorded in John 3:16 also said:
"This is the work of God, that you believe in Him whom He has sent." (John 6:29)
It is the work of God that a person (the "who" mentioned by Jesus in John 3:16) believes in Jesus whom the Father has sent (as indicated in by Jesus in John 6:29). Don't forget that Jesus said:
"apart from Me you can do nothing" (John 15:5)
There it is plain that a person can not believe without the Lord Jesus Christ, and, the same Lord Jesus said:
"He who rejects Me and does not receive My sayings, has one who judges him; the word I spoke is what will judge him at the last day."
It is rejection of the Lord Jesus Christ to not give Him His due glory! Saving faith is for His glory.
Please see
"The Lord Jesus Says That Belief/Faith and Choosing Are All God Post".