Ecclesiastes 10:13

13 Fools base their thoughts on foolish assumptions, so their conclusions will be wicked madness;

Ecclesiastes 10:13 Meaning and Commentary

Ecclesiastes 10:13

The beginning of the words of his mouth [is] foolishness
As soon as ever he opens his mouth, he betrays his folly; the first word he speaks is a foolish one; or it is from the abundant folly in his heart that he speaks, which is the source and spring of all his foolish talk; and the end of his talk [is] mischievous madness;
to himself and others; as he goes on, he appears more and more foolish, and yet more confident of his own wisdom; and is resolutely set on having his own way and will; grows warm, and is violently hot, to have his own words regarded; and, if contradicted, is like a madman, scattering arrows, firebrands, and death; his talk from first to last is a circle of folly; and, though it begins with something weak, and may seem innocent, yet it ends and issues in wickedness and madness, in rage and wrath, in oaths and curses.

Ecclesiastes 10:13 In-Context

11 If a snake bites before you charm it, what’s the use of being a snake charmer?

12 Wise words bring approval, but fools are destroyed by their own words.

13 Fools base their thoughts on foolish assumptions, so their conclusions will be wicked madness;

14 they chatter on and on. No one really knows what is going to happen; no one can predict the future.

15 Fools are so exhausted by a little work that they can’t even find their way home.