Quran 2:209 — The Heifer (Al-Baqarah)

If you backslide, after the clear proofs have come to you, then know that GOD is Almighty, Most Wise.

[2:208] O you who believe, you shall embrace total submission; do not follow the steps of Satan, for he is your most ardent enemy.

[2:210] Are they waiting until GOD Himself comes to them in dense clouds, together with the angels? When this happens, the whole matter will be terminated, and to GOD everything will be returned.