I think if you accept the bible as your rule of faith then you cannot disagree with what it says, what does this statement by John the Baptist mean to you?
St. John 3:35-36 The Father loveth the Son, and hath given all things into his hand. He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.
Do muslims even believe that there is a Son of God?
Do we dare make God a liar by not believing the witness He has given us of His Son? Muslims do.
1st John 5:9-10 If we receive the witness of men, the witness of God is greater: for this is the witness of God which he hath testified of his Son. He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.
Without the gospel men are lost:
2nd Corinthians 4:3-4 But if our gospel be hid, it is hid to them that are lost:
In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.
Their only hope is to hear it and believe:
Epistle to Romans 10:13-15 For whosoever shall call upon the name of the Lord shall be saved.
How then shall they call on him in whom they have not believed? and how shall they believe in him of whom they have not heard? and how shall they hear without a preacher? And how shall they preach, except they be sent? as it is written, How beautiful are the feet of them that preach the gospel of peace, and bring glad tidings of good things!
So then let us spread the gospel with urgency:
St. Mark 16:15-16 And he said unto them, Go ye into all the world, and preach the gospel to every creature. He that believeth and is baptized shall be saved; but he that believeth not shall be damned
Matthew 28:19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost:
Before it is too late for them:
2nd Thessalonians 1:7-9 And to you who are troubled rest with us, when the Lord Jesus shall be revealed from heaven with his mighty angels,
In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ: Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power;