John, Chapter 1, 1-14:
In the beginning was the Word, and the Word was with God, and the Word was God. He was in the beginning with God. All things came to be through him, and without him nothing came to be. What came to be through him was life, and this life was the light of the human race; the light shines in the darkness, and the darkness has not overcome it. A man named John was sent from God. He came for testimony, to testify to the light, so that all might believe through him. He was not the light, but came to testify to the light. The true light, which enlightens everyone, was coming into the world. He was in the world, and the world came to be through him, but the world did not know him. He came to what was his own, but his own people did not accept him.
But to those who did accept him he gave power to become children of God, to those who believe in his name, who were born not by natural generation nor by human choice nor by a man's decision but of God. And the Word became flesh and made his dwelling among us, and we saw his glory, the glory as of the Father's only Son, full of grace and truth.
In principio erat Verbum, et Verbum erat apud Deum, et Deus erat Verbum. Hoc erat in principio apud Deum. Omnia per ipsum facta sunt, et sine ipso factum est nihil, quod factum est; in ipso vita erat, et vita erat lux hominum, et lux in tenebris lucet, et tenebrae eam non comprehenderunt. Fuit homo missus a Deo, cui nomen erat Ioannes; hic venit in testimonium, ut testimonium perhiberet de lumine, ut omnes crederent per illum. Non erat ille lux, sed ut testimonium perhiberet de lumine. Erat lux vera, quae illuminat omnem hominem, veniens in mundum. In mundo erat, et mundus per ipsum factus est, et mundus eum non cognovit. In propria venit, et sui eum non receperunt. Quotquot autem acceperunt eum, dedit eis potestatem filios Dei fieri, his, qui credunt in nomine eius, qui non ex sanguinibus neque ex voluntate carnis neque ex voluntate viri, sed ex Deo nati sunt. Et Verbum caro factum est et habitavit in nobis; et vidimus gloriam eius, gloriam quasi Unigeniti a Patre, plenum gratiae et veritatis.
Islam denies categorically the Incarnation of God in Jesus. Followers of Islam do not, by implication, accept the (only) True Light. They do not believe in the name of JESUS CHRIST and consequently reject Grace and Truth. Therefore, muslims are "not born of God", they cannot "become children of God", as long as they do not convert to the Father's Only Son.