Titus 3:9

but shun foolish questionings, and genealogies, and strifes, and fightings about law; for they are unprofitable and vain.

2 Timothy 2:14

Of these things put them in remembrance, charging them in the sight of the Lord, that they strive not about words, to no profit, to the subverting of them that hear.

2 Timothy 2:23

But foolish and ignorant questionings refuse, knowing that they gender strifes.

Job 15:3

Should he reason with unprofitable talk, Or with speeches wherewith he can do no good?

1 Corinthians 8:1

Now concerning things sacrificed to idols: We know that we all have knowledge. Knowledge puffeth up, but love edifieth.

1 Corinthians 13:2

And if I have the gift of prophecy, and know all mysteries and all knowledge; and if I have all faith, so as to remove mountains, but have not love, I am nothing.

1 Timothy 1:3-7

As I exhorted thee to tarry at Ephesus, when I was going into Macedonia, that thou mightest charge certain men not to teach a different doctrine,

1 Timothy 4:7

but refuse profane and old wives fables. And exercise thyself unto godliness:

2 Timothy 2:16

But shun profane babblings: for they will proceed further in ungodliness,

Titus 1:14

not giving heed to Jewish fables, and commandments of men who turn away from the truth.

Treasury of Scripture Knowledge

Summary

But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.

General references

Bible References

Avoid

Titus 1:14
not giving heed to Jewish fables, and commandments of men who turn away from the truth.
1 Timothy 1:3
As I exhorted thee to tarry at Ephesus, when I was going into Macedonia, that thou mightest charge certain men not to teach a different doctrine,
1 Timothy 4:7
but refuse profane and old wives fables. And exercise thyself unto godliness:
2 Timothy 2:23
But foolish and ignorant questionings refuse, knowing that they gender strifes.

Unprofitable

Job 15:3
Should he reason with unprofitable talk, Or with speeches wherewith he can do no good?
1 Corinthians 8:1
Now concerning things sacrificed to idols: We know that we all have knowledge. Knowledge puffeth up, but love edifieth.
1 Corinthians 13:2
And if I have the gift of prophecy, and know all mysteries and all knowledge; and if I have all faith, so as to remove mountains, but have not love, I am nothing.
2 Timothy 2:14
Of these things put them in remembrance, charging them in the sight of the Lord, that they strive not about words, to no profit, to the subverting of them that hear.

General references

2 Timothy 2:23
But foolish and ignorant questionings refuse, knowing that they gender strifes.

American Standard Version Public Domain