We’re talking about a faith in an all encompassing single God, invisible in one sense, but omni-visible in the universe as a whole. What kinds of artifacts are they expecting to find? No statues, seals, coins, and it was hundreds of years in the Promised Land before they decided to build a permanent temple.
It’s cringe-worthy to see contentious remonstrations about ancient Hebrews being enslaved while, at least to American Jewry, the existential struggles of Israel are not even on the radar.
No, as a matter of fact, we're not -- we're talking about whether Hebrews were ever slaves in ancient Egypt. Hence the title.