2 Samuel 23:2 has David declare, 'The Spirit of the LORD spoke through me' — a direct parallel to the Spirit speaking through believers.

Mark 12:36 cites David speaking by the Holy Spirit — the same pattern of the Spirit using human mouths as in Matthew 10:20.

Luke 21:15 promises Jesus will give words and wisdom that adversaries cannot resist — a strong parallel to the Spirit speaking through you.

Acts 2:4 shows the promised Spirit empowering speech at Pentecost, fulfilling Jesus' word here that the Spirit speaks through disciples.

Acts 4:8 records Peter being filled with the Spirit to speak before rulers, directly exemplifying this promise of Spirit-led testimony.

Acts 6:10 shows Stephen's opponents unable to resist the Spirit's wisdom in his speech—another instance of the Spirit speaking through believers as promised.

In Exodus 4:12, God promises to teach Moses what to speak—a direct OT parallel to the Spirit speaking through disciples in trial.

Mark 13:11 records Jesus' identical promise that the Holy Spirit speaks through believers when arrested—a synoptic parallel.

2 Corinthians 13:3 shows Paul claiming Christ speaking through him — parallel to the Spirit speaking through disciples in Mt 10:20.

John 14:17 identifies the Spirit of truth who dwells in believers—the same Spirit who speaks through them in Matthew 10:20.

Luke 11:13 promises the Father gives the Holy Spirit — the source of the Spirit who speaks through believers when arrested.

Acts 1:4 records Jesus commanding disciples to wait for the promised Holy Spirit—the Spirit who later empowers their speech as promised.

Acts 28:25 attributes Isaiah's words to the Holy Spirit—showing the Spirit speaking through human agents, echoing the promise here that the Spirit speaks through believers.

Romans 8:26 describes the Spirit helping our weakness in prayer—another role of the same Spirit aiding human speech.

2 Corinthians 3:5 states our sufficiency is from God—mirroring the idea that believers are not the source of their own words.