Comfort is not an explanation for why something painful happened. In these passages it is more often presence, refuge, accompaniment, or the permission to bring grief into prayer. That makes this shelf suitable when neat answers would feel smaller than the loss.
Begin with Psalm 34:18 when grief feels isolating, Isaiah 43:2 when the image of passing through danger fits, or 2 Corinthians 1:3 when you need language for receiving and then sharing comfort.