a wellspring

Proverbs 10:11
The mouth of the righteous is a fountain of life, but the mouth of the wicked conceals violence.

Proverbs 13:14
The teaching of the wise is a fountain of life, turning one from the snares of death.

Proverbs 14:27
The fear of the LORD is a fountain of life, turning a man from the snares of death.

Proverbs 18:4
The words of a man's mouth are deep waters; the fountain of wisdom is a bubbling brook.

John 5:24
Truly, truly, I tell you, whoever hears My word and believes Him who sent Me has eternal life and will not come under judgment. Indeed, he has crossed over from death to life.

John 6:63, 68
The Spirit gives life; the flesh profits nothing. The words I have spoken to you are spirit and they are life. . . .

the instructions

Proverbs 15:2, 28
The tongue of the wise commends knowledge, but the mouth of the fool spouts folly. . . .

Matthew 15:14
Disregard them! They are blind guides. If a blind man leads a blind man, both will fall into a pit."

Matthew 23:16-26
Woe to you, blind guides! You say, 'If anyone swears by the temple, it means nothing; but if anyone swears by the gold of the temple, he is bound by his oath.' . . .

Luke 6:39, 40
Jesus also told them a parable: "Can a blind man lead a blind man? Will they not both fall into a pit? . . .