"But what does it say? "The Word is near your mouth and in your heart";that is, the Word of Faith which we proclaim;"
This is from the Modern King James Version.
I hope that whoever had this idea about the scientific vs the spiritual (what some call "religious") does indeed refer to this verse because then maybe that would lead to verse 10:9
"Because if you confess the Lord Jesus, and believe in your heart that God has raised Him from the dead, you shall be saved." Now that's powerful good stuff