Allah (swt) condemns whoever seeks a religion other than His faith for which His scriptures were revealed and His Messengers were sent, that is to worship Allah alone with no partner. To Allah (to Him have submitted [all] those within the heavens and earth, willingly or by compulsion). So, those within them both believed willingly or by compulsion as the Almighty says:

 {وَلِلَّهِ يَسْجُدُ مَن فِي السَّمَاوَاتِ وَالْأَرْضِ طَوْعًا وَكَرْهًا وَظِلَالُهُم بِالْغُدُوِّ وَالْآصَالِ}

(And to Allah prostrates whoever is within the heavens and the earth, willingly or by compulsion, and their shadows [as well] in the mornings and the afternoons.) (Ar-Ra’d: 15)

 أَوَلَمْ يَرَوْا إِلَىٰ مَا خَلَقَ اللَّهُ مِن شَيْءٍ يَتَفَيَّأُ ظِلَالُهُ عَنِ الْيَمِينِ وَالشَّمَائِلِ سُجَّدًا لِّلَّهِ وَهُمْ دَاخِرُونَ % وَلِلَّهِ يَسْجُدُ مَا فِي السَّمَاوَاتِ وَمَا فِي الْأَرْضِ مِن دَابَّةٍ وَالْمَلَائِكَةُ وَهُمْ لَا يَسْتَكْبِرُونَ

(Have they not considered what things Allah has created? Their shadows incline to the right and to the left, prostrating to Allah, while they are humble. % And to Allah prostrates whatever is in the heavens and whatever is on the earth of creatures, and the angels [as well], and they are not arrogant..) (An-Nahl: 48-49)

A believer, then, is devoted with heart and soul to Allah (swt), whereas a disbeliever accepts Allah’s will compulsorily, for they are under subjugation, oppression, and Lord’s authority that can never be repelled or defied.