Acts 21:11 explicitly says 'Thus says the Holy Spirit' through Agabus — a direct parallel to the Spirit speaking through a prophet as here.

Acts 1:16 says the Holy Spirit spoke through David — identical phrasing to the Spirit speaking through Isaiah here.

2 Peter 1:21 affirms prophecy came from the Holy Spirit — Paul here states the same, attributing Isaiah's words to the Holy Spirit.

Matthew 10:20 teaches the Spirit speaks through believers, paralleling the Holy Spirit speaking through Isaiah in Acts 28:25.

Hebrews 3:7 explicitly attributes an OT quote to the Holy Spirit — the same appeal to the Spirit's voice that Paul makes when citing Isaiah.

Luke 19:42 directly echoes the 'hidden from your eyes' theme — Jesus laments Jerusalem's blindness, matching the closed eyes in this quotation.

Luke 1:70 echoes God speaking through holy prophets — the same pattern of divine speech through prophets seen here.

Mark 12:36 affirms David spoke by the Holy Ghost, echoing the same principle of Spirit-inspired speech found in Acts 28:25.

Mark 4:12 also quotes Isaiah 6:9-10, the very prophecy Paul uses to explain Jewish unbelief.

Matthew 13:14 directly quotes the same Isaiah prophecy (Isa 6:9-10) that Paul cites in Acts 28:25.

Nehemiah 9:30 describes God testifying by His Spirit through prophets but the people refusing to hear—exactly the scenario Paul recounts.

Mark 7:6 parallels Matthew 15:7 — Jesus quotes Isaiah about hypocrites; Paul also cites Isaiah here regarding hardened hearts.

Matthew 15:7 has Jesus quoting Isaiah against hypocrites — Paul similarly quotes Isaiah here to explain Jewish unbelief.

2 Timothy 3:16 affirms that all Scripture is God-breathed — reinforcing Paul's claim here that the Holy Spirit spoke through Isaiah.

Hebrews 9:8 describes the Holy Spirit indicating truths through the tabernacle — another instance of the Spirit communicating through OT writings.

Hebrews 10:15 has the Holy Spirit bearing witness through Jeremiah — matching Paul's assertion that the Spirit spoke through Isaiah.

John 14:26 describes the Holy Spirit teaching, while here the Spirit spoke through Isaiah — both show the Spirit's role in communicating truth.

Hebrews 4:7 again cites Psalm 95 as God speaking through David — showing the pattern of Scripture as divine speech, similar to Acts 28:25.

1 Timothy 4:1 says 'the Spirit expressly says' about future events — similar pattern of the Spirit speaking prophecy, though different content.