Joel 2:28

'I send out the promise of my Father on you... until you are clothed with power from on high' anticipates Joel's outpouring of the Spirit on all flesh, which Luke fulfills explicitly at Pentecost (Acts 2:17, quoting Joel). The Spirit as the Father's promise is the bridge from Luke 24 to Acts. Volume and recurrence are high.

The 'varieties of gifts, but the same Spirit' poured out on the community reflects the eschatological outpouring of one Spirit producing diverse manifestations (sons, daughters, old, young prophesying and dreaming). The one-Spirit/many-recipients structure coheres tightly with Joel's vision, which Paul elsewhere cites for the Spirit's universal distribution.

Prophecy as the signature gift of the poured-out Spirit ('your sons and daughters shall prophesy') stands behind Paul's list, which prominently includes prophecy. The eschatological democratization of the Spirit coheres with Paul's 'to each one is given the manifestation of the Spirit.'

Being 'all given to drink into one Spirit' and 'baptized in one Spirit' draws on the imagery of the Spirit poured out on all flesh regardless of status (sons, daughters, slaves). Joel's leveling of social distinctions in the Spirit's outpouring coheres with Paul's 'whether Jews or Greeks, whether bond or free.'

The outpouring of God's Spirit on all flesh, so that all prophesy, underlies the anointing given to every believer that teaches them all things. The democratized Spirit of the last days matches John's "you all have knowledge."

'I will pour out my Spirit on all flesh' grounds v.39's note that the Spirit 'was not yet given,' since the prophetic Spirit-outpouring awaited the eschaton. The pouring-out language coheres with the water imagery and explains the deferral until Jesus is glorified. Medium as background to the editorial Spirit comment.

Paul's claim that only by the Holy Spirit can one confess 'Jesus is Lord' anticipates the chapter's pneumatology, faintly resting on the promise that God will pour out his Spirit on all flesh so that they prophesy. The connection is thematic (Spirit-enabled speech) rather than verbal here.

Prophets ranked among God's appointed in the assembly continues the chapter's reliance on Joel's outpoured-Spirit prophecy. The placement of prophecy as a settled, God-given office among the people coheres with the eschatological community of prophets Joel envisions.

Joel's promise that God will 'pour out my Spirit on all flesh' stands behind the eschatological gift of the Spirit Paul names as down payment. The link is thematic (the Spirit as the marker of the last days) rather than verbal, so volume is low and the connection is contested against Ezekiel's more personal Spirit-indwelling promise.

The reception of the Spirit by hearing of faith evokes the eschatological outpouring of the Spirit promised in Joel 2:28-29, which undergirds Paul's argument that the Spirit is the mark of the new age. Verbal volume is low; the link is conceptual via the promised-Spirit theme that culminates in v.14. Contested.

'The promise of the Spirit' (v.14) may echo the prophetic promise of the poured-out Spirit (Joel 2:28-29; cf. Isaiah 44:3; Ezekiel 36:27). Paul does not cite a text, but the eschatological-Spirit-promise tradition stands behind the phrase. Contested and diffuse.

'I will pour out my Spirit on all flesh' as eschatological down-payment resonates with 'the first fruits of the Spirit' (v.23), the Spirit as the firstfruits/guarantee of the coming redemption.