Jesus said this at the very start of His most famous sermon, laying out who is actually blessed in God’s eyes. And He puts mourners right on the list.
Blessed are those who mourn. Not blessed are those who move on quickly, or keep it together, or never cry. He honors the grieving. He does not rush them.
For they will be comforted. The comfort is a promise, not a demand that you feel better now. Jesus makes room for the grief and guarantees the comfort in the same breath.
So you do not have to apologize for still hurting. Mourning is not a lack of faith. Jesus called it blessed, and He attached a promise to it: comfort is coming, and it is coming to you.