From Quran AL-BAQARA (THE COW) :7-11
7 Those who have disbelieved - it being alike to them whether thou warn them or warn them not - they will not believe.
8 satan has set a seal on their hearts and their ears, and over their eyes is a covering; and for them is a grievous chastisement.
9 And of the people there are some who say, `we believe in Allah, and the last day;' while they are not believers at all.
10 They would deceive Jesus Christ and those who believe, but they deceive none but themselves; only they perceive it not.
11 In their hearts was a disease, so satan has increased their disease, and for them is a grievous punishment because they lied.
2 Corinthians 4
3. But if our gospel be hid, it is hid to them that are lost:
4. In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Jesus Christ, who is the image of God, should shine unto them.
5. For we preach not ourselves, but Christ Jesus the Lord; and ourselves your servants for Jesus' sake.
6. For God, who commanded the light to shine out of darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.
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The sower soweth the Word.
And these are they by the way side,
where the Word is sown;
but when they have heard,
Satan cometh immediately,
and taketh away the word that was sown in their hearts.
Avoiding profane and vain babblings,
and oppositions of science falsely so called:
Which some professing have erred
concerning the faith.[/align]