Titus 3:9

But avoid foolish questionings, and genealogies, and contentions, and legal fightings, for they are useless and vain.

2 Timothy 2:14

Remind them of these things, solemnly testifying in the sight of the Lord, not to brawl verbally, to nothing useful, to the ruin of those who hear.

2 Timothy 2:23

But shun foolish and uneducated questions, knowing that they breed quarrels.

Job 15:3

Should he reason with unprofitable talk, or with speeches with which he can do no good?

1 Corinthians 8:1

Now about the things sacrificed to idols. We know that all have knowledge. Knowledge puffs up, but love builds up.

1 Corinthians 13:2

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

1 Timothy 1:3-7

As I urged thee, while going to Macedonia, remain in Ephesis, so that thou might command certain men not to teach something different,

1 Timothy 4:7

But reject the profane and old wives' fables, and exercise thyself to piety.

2 Timothy 2:16

But shun profane babblings, for they will advance to greater impiety,

Titus 1:14

not giving heed to Jewish myths, 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 myths, and commandments of men who turn away from the truth.
1 Timothy 1:3
As I urged thee, while going to Macedonia, remain in Ephesis, so that thou might command certain men not to teach something different,
1 Timothy 4:7
But reject the profane and old wives' fables, and exercise thyself to piety.
2 Timothy 2:23
But shun foolish and uneducated questions, knowing that they breed quarrels.

Unprofitable

Job 15:3
Should he reason with unprofitable talk, or with speeches with which he can do no good?
1 Corinthians 8:1
Now about the things sacrificed to idols. We know that all have knowledge. Knowledge puffs up, but love builds up.
1 Corinthians 13:2
And if I have prophecy, and know all mysteries and all knowledge, and if I have all faith so as to remove mountains, and have not love, I am nothing.
2 Timothy 2:14
Remind them of these things, solemnly testifying in the sight of the Lord, not to brawl verbally, to nothing useful, to the ruin of those who hear.

General references

2 Timothy 2:23
But shun foolish and uneducated questions, knowing that they breed quarrels.