Evidence and the Message
What the Bible says about evidence
The bible clearly talks about the value of evidence.
Luke focused on evidence as proof the Gospel was true
The whole purpose of Luke's writings were to provide proof:
- Inasmuch as many have undertaken to compile a narrative of the things that have been accomplished among us, 2 just as those who from the beginning were eyewitnesses and ministers of the word have delivered them to us, 3 it seemed good to me also, having followed all things closely for some time past, to write an orderly account for you, most excellent Theophilus, 4 that you may have certainty concerning the things you have been taught. 
Acts 1:1-3 (written by Luke):
- In the first book, O Theophilus, I have dealt with all that Jesus began to do and teach, 2 until the day when he was taken up, after he had given commands through the Holy Spirit to the apostles whom he had chosen. 3 He presented himself alive to them after his suffering by many proofs, appearing to them during forty days and speaking about the kingdom of God.
Acts 9:22-23 (Paul provided proof to the Jews):
- Saul’s preaching became more and more powerful, and the Jews in Damascus couldn’t refute his proofs that Jesus was indeed the Messiah.
Jesus said we should look at the evidence
In John 14:11, the need to look at the evidence is clear:
- Believe me when I say that I am in the Father and the Father is in me; or at least believe on the evidence of the works themselves.
The need for 2-3 witnesses is required as evidence
Jesus outlined the requirement in Matthew 18:16:
- ...take one or two others along with you, that every charge may be established by the evidence of two or three witnesses.
Paul made the requirement clear in 2 Corinthians 13:1:
- Every matter must be established by the testimony of two or three witnesses.
Paul also made the point clear in his instructions to Timothy in 1 Tim. 5:19-20:
- Do not admit a charge against an elder except on the evidence of two or three witnesses. 20 As for those who persist in sin, rebuke them in the presence of all, so that the rest may stand in fear.
- The Holy Bible: English Standard Version (Wheaton: Standard Bible Society, 2016), Lk 1:1–5.
- The Holy Bible: English Standard Version (Wheaton: Standard Bible Society, 2016), Ac 1:1–3.
- Tyndale House Publishers, Holy Bible: New Living Translation (Carol Stream, IL: Tyndale House Publishers, 2013), Ac 9:22–23.
- The New International Version (Grand Rapids, MI: Zondervan, 2011), Jn 14:11.
- The Holy Bible: English Standard Version (Wheaton: Standard Bible Society, 2016), Mt 18:16.
- The New International Version (Grand Rapids, MI: Zondervan, 2011), 2 Co 13:1.
- The Holy Bible: English Standard Version (Wheaton: Standard Bible Society, 2016), 1 Ti 5:19–20.