“Comforter” isn’t God’s title, it’s His nature. These verses are a reminder of His compassion and comfort towards you when you are hurting.
God hears you and all of your thoughts and worries. You can put your hope and trust in Him that He will sustain you and never leave you.
We need convincing evidence of the goodness of God’s character if we are to trust him with our lives and futures in a world that deadly pathogens exist.