In 1 Corinthians 14:9-11, the unintelligibility of tongues is illustrated with foreign languages—expanding on the problem stated here.

In 1 Corinthians 14:16, a concrete example shows the problem: the unlearned cannot say 'Amen'—highlighting the issue of uninterpreted tongues.

1 Corinthians 14:14 explains that praying in a tongue leaves the mind unfruitful, directly illustrating the lack of understanding mentioned here.

1 Corinthians 12:10 lists tongues and interpretation among the spiritual gifts, providing the broader context for the gift described here.

1 Corinthians 2:13 describes Spirit-taught words that impart understanding, while here tongues speak mysteries without understanding — both are Spirit-empowered speech with different outcomes.

1 Corinthians 13:2 values understanding mysteries, contrasting with the uninterpreted tongues that utter mysteries without comprehension here.

1 Corinthians 2:7 speaks of God's hidden wisdom as a mystery, similar to the mysteries uttered in tongues here.

Acts 2:4-11 shows tongues as intelligible languages to hearers, contrasting with the unintelligible mysteries spoken here.

Acts 10:46 records Gentiles speaking in tongues and exalting God, paralleling the practice of speaking mysteries to God here.

Acts 19:6 describes another instance of speaking in tongues after the Spirit came, paralleling the phenomenon Paul discusses.

In Genesis 11:7, God confuses language so people cannot understand—a parallel to tongues being unintelligible without interpretation.

Deuteronomy 28:49 describes a foreign nation with an unintelligible language as divine judgment, echoing the unintelligibility of tongues here but in a different context.