Romans 10:13

Joel (Joe 2:32) had already announced this new fact: that salvation would depend only on the believing invocation of the name of Jehovah in His final Messianic manifestation. Legal rights had vanished from before his eyes; there remained the adoration of Jehovah in His supreme revelation. Paul applies with full right this prophetic word to the coming of Jesus. Now, if the invocation of the name of Jehovah, revealed in the person of the Messiah Jesus, is to be the means of salvation for all, what follows therefrom? The need of a universal preaching of the name which must be invoked by all.