Knowing through experience is far different than having knowledge of an experience.
You must experience God for yourself – this is not something you can pick up vicariously through others.
Part of differentiating the voice of God from anything <anyone> else is understanding that the message from Him will glorify and highlight His character. Anything to the contrary isn’t a message from Him.
This isn’t to say that the message is always leading us down the easiest path. In many instances, it’s quite the opposite. He will lead us into places where we are able to experience and grow with Him in powerful ways. This often means a challenge…a challenge that he will most assuredly enter in to with you and see you through.
Dare to take the challenge – lean into him through the storm – and see the ways in which He will be glorified in and through you.