Indeed, Allah and His angels send prayers upon the Prophet. O you who believe! Send prayers and abundant salutations upon him. (Surah Ahzab, 33:56)
You should realize that prayer upon the Prophet ﷺ is a ladder and means of [spiritual] ascent to arrive unto Allah. That is because sending prayers upon him ﷺ frequently engenders the Prophet’s love, and the Prophet’s love engenders Allah’s love, and Allah’s love for the servant attracts the servant to the Divine Presence—with or without an intermediary.