That notion is almost completely wrong.
Evidence has no bearing to what truth is, it's simply an over stated term.
Try to get a history book about a figure existed 2000 years ago then ask yourself what evidence do you have for you to believe he ever existed? If you try to look for evidence, most historical figures (the farther away history is the more it is so) don't exist.
So the question is rather, if such a figure mentioned in a book truly exist how can you reach such a truth. The only way you can reach such a truth is by reading what was written and put your faith in believing either he existed or he's not! There's no other way around under most circumstances.
To put it another way, the only media for today's humans to reach such a truth is by putting faith in what was witnessed by the direct witnesses back then (sometimes you have to believe indirect witness without much choice).
Believing in God is about something similar but not exactly though. First, witnessing is the only way to reach this truth, unless God chooses to show up directly. Second, it's different from history in that history doesn't concern our lives but God does. Third, it's more different from history that we have the Holy Spirit with us for us to perceive His existence to a certain extent. It's also faith based though not necessarily be evidence based.
To put it another way, we have a case here claimed to be concerning our death or alive (that would happen after our physical death). In the case it's true, the only way for all humans alike to reach such a truth is by trusting the witnesses back then (i.e., 2000 years ago those witnesses of Jesus).
Other question left are;
Does God has a good reason to hide behind?
If God concerns about humans why doesn't He just show up in front of us to guide us instead of hiding behind to invite our faith instead? I myself failed to see other gods can provide a good answer to this question, except for Christianity.
The analogy is more like a claim that "there's a terrorist bomb" in a public area. The thought to be direct witnesses chose to die in order to bring this message out. In the case that the bomb is true, the only way you can reach this truth is by trusting the witnesses before it's set to blast.
The whole setup is about that faith is the only way to reach truth, and faith (of humans) is the factor to be evaluated (by God). It makes sense. It's a truly fair and accurate evaluation as no one human will fake it. If you have no faith, you won't fake yourself to say that you believe Jesus, disregarding whether you are a clever or a dumb or a tricky person.
You say: “today's humans to reach such a truth is by putting faith in what was witnessed by the direct witnesses back then” and “witnessing is the only way to reach this truth, unless God chooses to show up directly.”
You can “witness” today the huge unbelievable changes God has made in people’s lives today by having Christ live in and through them. Getting to ‘know” such people you witness an unbelievable “Love” (Godly type Love” and Christ Himself) for God is this Love.
People should come to God/Christ out of a desire for such unconditional unselfish Love. Wanting that Love is wanting God to exist in them.
Remember: God is doing all He can to help you to accept His charity, but giving you “knowledge” of His existence will not make you humble to the point of accepting pure charity.
There is a huge problem with “knowledge” since it tends to “puff up” those that have it. Also “knowledge” is something the individual can obtain and thus become more self-reliant, when the need of the individual is to be humble and accepting of God’s help (charity).
Some people in the OT had direct “knowledge” of God’s existence (like those that walked through the Red Sea), but that did not help them to be humble.
God has given all mature adults the ability to express faith in somethings or some people.
If salvation was dependent on some other factor than “faith” such as knowledge, ancestry, physical strength, good looks, courage, or some kind of achievement,
God would not be fair/just.
Directing the little faith (we all have) toward a benevolent Creator is something the lowliest mature adult on earth can do, so extending faith toward God existence is a humbling experience (and very easy to do). That little humility is all you need to be willing to humbly accept pure charity (something man find hard to do).
God is doing all He can to help you to accept His pure charity as charity (these gifts of charity are unbelievably huge). Since, Faith in God helps us in our acceptance of charity, God allows us to extend faith toward Him, but having faith in the existence of a benevolent Creator is made as easy as possible yet it is still not knowledge.
If you do not “need” to believe (trust) in a benevolent Creator than you can avoid putting your faith in a benevolent Creator. You can believe (trust) that the universe and life was a random result, since it would make no difference unless you had a real “need” to believe in a benevolent God.
Atheist may say “I do not believe anything”, but practically they act like; they “believe” the Christian God does not exist and for most of my discussions with them, do not want or like the Christian God, so they have reason not to believe.
You will find you are on a “need to know bases” and if it would “upset” you to know, so God will not upset you, since all He wants to do is help you.