'Be Truly Muslim'
This has reference to the misconduct and disorderliness of the Christians who failed in the matter of due veneration of the Holy City and brought about its ruin in arrogant pride. For those who were guilty of such arrogance, disgrace in this life and a severe chastisement in the hereafter is pronounced.
Allah says in the Holy Quran: “To Allah belong the East, and the West; whether so ever you turn, there is the countenance of Allah. Surely, Allah is All-Pervading, All-Knowing.” (Al-Baqara 2: 116).
“Never will the Jews be pleased with you, (O Prophet), nor the Christians until you follow their way. Say: ‘Surely Allah’s guidance, is the [true] guidance.’ Should you follow their desires disregarding the knowledge which has come to you, you shall have no protector or helper against Allah.” (Al-Baqara 2: 121).
The only true guidance is the guidance sent by Allah.