Using your Bible, lets follow some logic here...
Humanity exists for a good 2 million years++, and then suddenly "God" decides to send a message to the Jews. But that didn't work, because the creator of the universe must have a speech impediment and can't seem to pull off his rules quite well enough that people can follow them. So he comes to Earth personally to set it straight. Okay...
But... While he's here, he imparts NO worldly wisdom whatsoever that the people of the era didn't already know. As an example... He never mentions bacteria, washing, basic hygiene, pasteurization, sterilization, etc...
In fact, Jesus does exactly the opposite. He actually tells the disciples they don't have to wash their hands before they eat (which was at that time a cultural thing, not a hygiene thing).
So a supposed "Loving God" comes to Earth, and fails to mention the SIMPLE thing that (according to the CDC) killed a full 50% of ALL of humanity before they turned 20!
That's your loving God??
Please explain how this makes sense, not just to a Christian; but to ANYONE?
++ So it's not a sticking point, for the sake of facilitating the discussion, I'm willing to concede to ANY length of time you want to try to justify.