The Mountain of Fear and the Mountain of Joy

18 You have not come to a mountain that can be touched and that is burning with fire; to darkness, gloom and storm;

Read Hebrews 12:18 Using Other Translations

For ye are not come unto the mount that might be touched, and that burned with fire, nor unto blackness, and darkness, and tempest,
For you have not come to what may be touched, a blazing fire and darkness and gloom and a tempest
You have not come to a physical mountain, to a place of flaming fire, darkness, gloom, and whirlwind, as the Israelites did at Mount Sinai.