وَإِذَا يُتْلَىٰ عَلَيْهِمْ قَالُوٓا۟ ءَامَنَّا بِهِۦٓ إِنَّهُ ٱلْحَقُّ مِن رَّبِّنَآ إِنَّا كُنَّا مِن قَبْلِهِۦ مُسْلِمِينَ Qur’an Al-Qasas (28:53)Wai tha yutl a AAalayhim q a loo a mann a bihi innahu al h aqqu min rabbin a inn a kunn a min qablihi muslimeen a
lit., ‘We had already been Muslims.’
There were Christians and Jews who recognised that Islam was a logical and natural development of Allah's revelations as given in earlier ages, and they not only welcomed and accepted Islam, but claimed, and rightly, that they had always been Muslims. In that sense Adam, Noah, Abraham, Moses, and Jesus had all been Muslims.