Matthew 6:24 “No one can serve two masters; for either he will hate the one and love the other, or else he will be loyal to the one and despise the other. You cannot serve God and mammon.
If you had two bosses and they always agreed, following them would not be a problem. But when they disagree it can be difficult how to remember which boss to follow and which to ignore!
Following two leaders in your country can be very hard work. Continuing to try and follow both of them as they try and go their separate ways is impossible.
It’s bad enough trying to recognise which songs are good and bad rather than trying to remember all the rules about following good and bad.
So God does not ask you to remember them all but gives you a bible which allows you to grow a little bit more at a time.