Allāh has the armies of the heavens and the earth at His disposal.
Allāh sent the Prophet ﷺ as a witness, as one who gives glad-tidings, and as a warner.
Our duty towards the Prophet ﷺ is to believe in him, support him and revere him.
Allāh has declared His pleasure for those Ṣaḥābah رضي الله عنهم who made the pledge under the tree at Ḥudaybīyah.
Muḥammad ﷺ is the Messenger of Allāh.
The Ṣaḥābah رضي الله عنهم were justifyably harsh against the disbelievers, merciful amongst themselves.