Verses with the word simple in the Old Testament (18 verses):

Psalms 19:7
The law of the LORD is perfect, converting the soul: the testimony of the LORD is sure, making wise the simple.

Psalms 116:6
The LORD preserveth the simple: I was brought low, and he helped me.

Psalms 119:130
The entrance of thy words giveth light; it giveth understanding unto the simple.

Proverbs 1:4
To give subtilty to the simple, to the young man knowledge and discretion.

Proverbs 1:22
How long, ye simple ones, will ye love simplicity? and the scorners delight in their scorning, and fools hate knowledge?

Proverbs 1:32
For the turning away of the simple shall slay them, and the prosperity of fools shall destroy them.

Proverbs 7:7
And beheld among the simple ones, I discerned among the youths, a young man void of understanding,

Proverbs 8:5
O ye simple, understand wisdom: and, ye fools, be ye of an understanding heart.

Proverbs 9:4
Whoso is simple, let him turn in hither: as for him that wanteth understanding, she saith to him,

Proverbs 9:13
A foolish woman is clamorous: she is simple, and knoweth nothing.

Proverbs 9:16
Whoso is simple, let him turn in hither: and as for him that wanteth understanding, she saith to him,

Proverbs 14:15
The simple believeth every word: but the prudent man looketh well to his going.

Proverbs 14:18
The simple inherit folly: but the prudent are crowned with knowledge.

Proverbs 19:25
Smite a scorner, and the simple will beware: and reprove one that hath understanding, and he will understand knowledge.

Proverbs 21:11
When the scorner is punished, the simple is made wise: and when the wise is instructed, he receiveth knowledge.

Proverbs 22:3
A prudent man foreseeth the evil, and hideth himself: but the simple pass on, and are punished.

Proverbs 27:12
A prudent man foreseeth the evil, and hideth himself; but the simple pass on, and are punished.

Ezekiel 45:20
And so thou shalt do the seventh day of the month for every one that erreth, and for him that is simple: so shall ye reconcile the house.