Knowledge is a fountain of life to him that possesseth it: the instruction of fools is foolishness.

a wellspring

Proverbs 10:11 Hatred stirreth up strifes: and charity covereth all sins.

Proverbs 13:14 The law of the wise is a fountain of life, that he may decline from the ruin of death.

Proverbs 14:27 The fear of the Lord is a fountain of life, to decline from the ruin of death.

Proverbs 18:4 Words from the mouth of a man are as deep water: and the fountain of wisdom is an overflowing stream.

John 5:24 Amen, amen, I say unto you that he who heareth my word and believeth him that sent me hath life everlasting: and cometh not into judgment, but is passed from death to life.

John 6:63,68 It is the spirit that quickeneth: the flesh profiteth nothing. The words that I have spoken to you are spirit and life. . . .

the instructions

Proverbs 15:2,28 The tongue of the wise adorneth knowledge: but the mouth of fools bubbleth out folly. . . .

Matthew 15:14 Let them alone: they are blind, and leaders of the blind. And if the blind lead the blind, both fall into the pit.

Matthew 23:16-26 Woe to you, blind guides, that say, Whosoever shall swear by the temple, it is nothing; but he that shall swear by the gold of the temple is a debtor. . . .

Luke 6:39,40 And he spoke also to them a similitude: Can the blind lead the blind? Do they not both fall into the ditch? . . .