114. In order for a person to obtain eternal life is it first necessary for them to hear and understand the Gospel of Jesus Christ and believe that God sent Him to be the Messiah, the Savior of the world?

Romans 10:8-17But what does it say? “The word is near you, in your mouth and in your heart;” that is, the word of faith which we preach: that if you will confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. For with the heart one believes resulting in righteousness; and with the mouth confession is made resulting in salvation. For the Scripture says, “Whoever believes in him will not be disappointed.” For there is no distinction between Jew and Greek; for the same Lord is Lord of all, and is rich to all who call on him. For, “Whoever will call on the name of the Lord will be saved.” How then will they call on him in whom they have not believed? How will they believe in him whom they have not heard? How will they hear without a preacher? And how will they preach unless they are sent? As it is written: “How beautiful are the feet of those who preach the Good News of peace, who bring glad tidings of good things!” But they didn’t all listen to the glad news. For Isaiah says, “Lord, who has believed our report?” So faith comes by hearing, and hearing by the word of God.

Al-Baqara (The Cow) 2:119-120Indeed, We have sent you, [O Muhammad], with the truth as a bringer of good tidings and a warner, and you will not be asked about the companions of Hellfire. And never will the Jews or the Christians approve of you until you follow their religion. Say, "Indeed, the guidance of Allah is the [only] guidance." If you were to follow their desires after what has come to you of knowledge, you would have against Allah no protector or helper.