In 2 Tim 2:14, Paul warns against word-strife, directly reinforcing the command to avoid foolish disputes in 2 Tim 2:23.

In 2 Tim 2:16, Paul tells Timothy to shun empty talk, consistent with avoiding foolish disputes in 2 Tim 2:23.

In 1 Timothy 4:7, Paul gives the same command: 'refuse profane and old wives' fables' — directly parallel to rejecting foolish speculations.

1 Timothy 6:4 describes the result of such speculations: pride, disputes over words, envy, strife — the very quarrels Paul warns against.

1 Timothy 6:5 continues the theme: 'useless wranglings of men of corrupt minds' — the same pointless debates Paul says to avoid.

Titus 3:9 echoes Paul's instruction nearly verbatim: 'avoid foolish disputes, genealogies, contentions... for they are unprofitable and useless.'

Proverbs 17:14 advises to 'stop contention before a quarrel starts' — the same proactive avoidance Paul commands regarding foolish speculations.

Acts 18:15 shows Gallio refusing to judge disputes about 'words and names' — a practical example of avoiding the kind of quarrels Paul rejects.

1 Timothy 1:6 describes those who turned aside to empty talk — the same vain disputes Paul warns Timothy to avoid in this verse.

In 1 Tim 1:4, Paul warns that fables cause disputes, underscoring the danger of the foolish disputes Timothy must avoid.