Acts and 1 Corinthians describe Spirit-enabled speech, but they do not present every instance in the same way. The Hebrew Bible supplies important background about prophecy, language, and judgment without expressly predicting a Christian practice called “praying in tongues.”
Numbers 11:25–29 describes elders prophesying when the Spirit rests on them, and Moses wishes that all the LORD’s people were prophets. Joel 2:28–32 promises a wider outpouring, including women, older and younger people, and servants, within a scene involving cosmic signs and deliverance. Acts 2:16–21 explicitly interprets Pentecost through Joel. Joel’s larger restoration includes Judah, Jerusalem, and the nations’ judgment; Acts’ application does not make that earlier setting disappear.
Acts 2:4–11 describes visitors hearing their own languages. Acts 10:44–48 and 19:1–7 also mention tongues, but do not independently identify the languages. First Corinthians 14 describes speech addressed to God that needs interpretation for others to understand. Readers disagree whether this always means an ordinary human language unknown to the assembly or a different kind of inspired utterance. “Tongues of angels” in 13:1 occurs among heightened rhetorical examples and does not settle the question by itself.
Paul quotes Isaiah 28:11–12 in 1 Corinthians 14:21. In Isaiah, strange lips and another tongue belong to an oracle of judgment against hearers refusing God’s instruction, not a description of private Christian devotion. Paul uses that earlier scene in his own argument about signs and intelligibility. His conclusion is not simply “the more tongues, the better”: uninterpreted speech can make visitors think the congregation is mad (14:23).
The public instructions are specific: two or at most three speakers, in turn, with interpretation; without an interpreter, the person is to remain silent publicly and speak to themselves and God (14:27–28). Verses 2, 4, 14–19, and 28 support arguments about devotional use, while the chapter’s overriding concern remains the community’s benefit. Romans 8:26’s groanings do not explicitly mention tongues.
Continuationists emphasize 1 Corinthians 13:8–12’s contrast between partial knowledge and seeing face to face, along with 14:39’s prohibition on forbidding tongues. Cessationists emphasize the foundational role of apostles and prophets and the confirmation of the initial message (Ephesians 2:20; Hebrews 2:3–4). No verse explicitly identifies completion of the biblical canon as “the perfect” in 1 Corinthians 13. Conversely, an eventual end of partial knowledge does not by itself prove every gift operates continuously in every intervening generation.
Paul’s “Do all speak in tongues?” expects no (1 Corinthians 12:30). Pentecostal distinctions between initial evidence of Spirit baptism and a congregational gift are theological explanations of that tension, not identical wording found in the verse. Contemporary claims require evaluation in addition to textual interpretation. A full-Bible account can explain the Christian practice without treating Joel or Isaiah as though their original subject was a later church dispute.
Read in context: Numbers 11; Joel 2; Isaiah 28; 1 Corinthians 14.