John ate the little scroll that the angel had given him (Rev.10) and he realized that the Kingdom of God was about to be established. Just the thought of God’s glorious Kingdom, the rule of Christ, the deserts blooming, the lion & the lamb together, no more war! This was sweet as honey! However, contemplating the horrible things that must take place beforehand & the wrath that must be poured out on the earth was bitter. Yes, it is a bittersweet thing, looking forward to the return of Jesus Christ, & His Glorious Kingdom, while also realizing that it means horrible pain & suffering will come in the process as sin is judged.