What does Romans 10:7 mean?
Paul has written in the previous verse that Israel should not attempt to bring the Messiah down from heaven when that has already happened. Christ has already come down! Paul is applying what God said to Israel about obeying His commands (Deuteronomy 30:11–14) to the idea of having faith in Christ.Israel, in Paul's context, should not look for someone to ascend into heaven to bring the Messiah down or, now, to descend into the abyss to bring the Messiah up, as if from the dead. Christ has already come to them in the form of Jesus and walked among them. He descended to the earth, died on the cross, descended into the abyss, and then ascended back to earth before ascending to heaven.
In other words, Christ has already been near to Paul's Jewish readers. They should not continue looking for the Messiah to come down or come up. Instead, they should understand that He has been near them and that the Word of God, and faith, is right in front of them ready to be believed. This "word of faith" is a reference to the gospel: the message of God's intended plan for our salvation.