Luke 24:48 identifies the disciples as witnesses of Jesus' resurrection, directly connecting to the 'eyewitnesses' mentioned in Luke 1:2.

John 15:27 has Jesus commanding disciples to testify because they have been with him from the beginning, echoing Luke 1:2's 'eyewitnesses from the first'.

Acts 1:3 shows Jesus appearing to the apostles after his resurrection, providing the firsthand proof that qualifies them as the eyewitnesses of Luke 1:2.

Acts 1:8 commissions the apostles as witnesses to the ends of the earth, fulfilling the eyewitness role introduced in Luke 1:2.

Acts 1:21 specifies that a replacement apostle must have been with Jesus the whole time, defining the 'from the first' eyewitnesses of Luke 1:2.

Acts 1:22 clarifies the timeframe 'beginning from John's baptism' for the eyewitnesses, aligning with Luke 1:2's 'from the first'.

Acts 4:20 has Peter and John declaring they cannot stop speaking about what they have seen and heard, embodying the eyewitness role of Luke 1:2.

Acts 10:39 has Peter testifying as a witness of Jesus' ministry and death, directly matching the eyewitnesses described in Luke 1:2.

Hebrews 2:3 echoes this: the gospel was confirmed by those who heard the Lord — the same tradition from eyewitnesses.

1 John 1:1-3 expands: apostles personally saw, heard, and touched the Word — the firsthand testimony behind Luke's account.

1 John 2:24 echoes 'from the beginning' — urging adherence to the original apostolic tradition delivered by eyewitnesses.

1 Peter 5:1 identifies Peter as a witness of Christ's sufferings — embodying the eyewitness role Luke describes.