Starting at 1st level, divine power guards your destiny. If you later replace this spell, you must replace it with a spell from the cleric spell list. It is a sorcerer spell for you, but it doesn't count against your number of sorcerer spells known. You learn an additional spell based on that affinity, as shown below. In addition, choose an affinity for the source of your divine power: good, evil, law, chaos, or neutrality. You must otherwise obey all the restrictions for selecting the spell, and it becomes a sorcerer spell for you. When your Spellcasting feature lets you learn a sorcerer cantrip or a sorcerer spell of 1st level or higher, you can choose the new spell from the cleric spell list or the sorcerer spell list. Your link to the divine allows you to learn spells normally associated with the cleric class.
Source: Xanathar's Guide to Everything Divine Magic
