And they said, to Moses, upon seeing the chastisement, ‘O sorcerer! — that is to say, ‘[O] knowledgeable, perfect one’, since for them sorcery was an awesome [form of] knowledge — supplicate your Lord for us by the covenant that He has made with you, [to the effect] that He would relieve us from chastisement if we believe. Assuredly we will be guided’, that is to say, [we will become] believers.