Spellcasting Ability

Wisdom is your spellcasting ability for your cleric spells. The power of your spells comes from your devotion to your deity. You use your Wisdom whenever a cleric spell refers to your spellcasting ability. In addition, you use your Wisdom modifier when setting the saving throw DC for a cleric spell you cast and when making an attack roll with one.

Spell save DC = 8 + your proficiency bonus + your Wisdom modifier

Spell attack modifier = your proficiency bonus + your Wisdom modifier