Translation
The words of his mouth begin with folly and the end of his mouth is grievous
Go to footnote numbermadness.
Paraphrase
the words that a fool speaks are based on an unhealthy, wrong-headed foundation, and the results of his words are evil madness.
Footnotes
1: “Grievous”
This is the word for “sin, evil, wicked,” but it also means “displeasing, unpleasant, bad, malignant, causing injury, misery, calamity, grievous wrong.”