Avi Loeb gives his definition of evidence.
Avi Loeb, "To Qualify as ‘Scientific,’ Evidence Has to Be Reproducible," on scientificamerican.com, accessed August 10, 2023
Ultimately, the assembly of reproducible results by instruments is essential for separating the subjective impressions of humans from objective data gathering. This does not imply that Abraham did not hear the voice of God. Instead, it highlights the fact that he would have needed a recording device to make the Biblical report convincing beyond a reasonable scientific doubt.