Surah 4. An-Nisaa', Ayah 137

Lit., "increase in a denial of the truth".

Those who go on changing sides again and again can have no real Faith at any time. Their motives are mere worldy double-dealing. How can they expect Allah's grace or forgiveness? Here is a clear warning against those who make their religion a mere matter of worldly convenience. True religion goes far deeper. It transforms the very nature of man. After that transformation it is as impossible for him to change as it is for light to become darkness.