"Faith" often gets used to mean believing something despite the evidence, or in the total absence of it — a leap in the dark. If that's what the Bible meant by faith, it would be a fair objection. It isn't.
Faith can mean more than one thing
You sit in a chair without inspecting its joints, because chairs have reliably held your weight before. You board a plane trusting a pilot you've never met, because airlines have a track record. That's faith — trust placed in something or someone, on the basis of good reason to think them trustworthy. It's not the absence of evidence; it's a response to it. Biblical faith is closer to that kind of trust than to a blind guess. Of course, trusting God also involves commitment; evidence can be weighed without making a decision automatic.
Christianity makes public claims
The Bible doesn't ask for faith that avoids scrutiny — it repeatedly invites it. Philip doesn't argue Nathanael into belief; he just says, "come and see" (John 1:46). Thomas doubts the resurrection, and Jesus doesn't rebuke him for wanting evidence — He shows him His wounds (John 20:27). Luke opens his Gospel by explaining he investigated eyewitness accounts to write "in order, that thou mightest know the certainty" of what he was told (Luke 1:1-4). Paul, defending the resurrection, points to over 500 living witnesses who could still be questioned at the time he wrote (1 Corinthians 15:6).
Evidence is not the same as certainty
People can reasonably disagree about how strong they find the historical case. Christianity does not ask for certainty about every question before anyone can begin to trust; it asks whether Jesus is trustworthy enough to follow. That is a decision to make carefully, not one to make by switching off your mind.
A practical next step
Christianity doesn't ask you to switch off your mind — it points you toward manuscript evidence, historical testimony, fulfilled prophecy, and a resurrection claimed by eyewitnesses willing to die rather than recant. See Can We Really Trust the Bible? and Did Jesus Really Rise? for more.