Proverbs 5:4 - Ellicott's Commentary On The Whole Bible

Bitter as wormwood. — The absinthium of Revelation 8:11, where, apparently, it is considered as a poison. So God’s message to St. John (Revelation 10:10) was in his mouth sweet as honey (comp. Psalms 19:10), but made his belly bitter: that is, he met with much sorrow and trouble in making it known to men, but through this “much tribulation” (Acts 14:22) he “entered into the kingdom of heaven.”