Romans 10:13 - Matthew Poole's English Annotations on the Holy Bible

That the Lord is rich unto all that call upon him, is confirmed here by a testimony out of Joel 2:32, which is also cited by St. Peter, Acts 2:21. The apostle's argument may be thus formed: If whosoever calls on the name of the Lord shall be saved, then the Lord is rich to all that call upon him; for no riches are comparable to salvation; but the former is true, therefore the latter. Whosoever, whether Jew or Gentile, shall call upon the name of the Lord shall be saved; i.e. on him whose name is the Lord. Jesus Christ is principally meant, as appears by many passages in the prophet. Compare this with 1 Corinthians 1:2.