God has solved this problem over and over throughout history. He has called humble, often uneducated men to speak His words, and those words have been written down as scripture. As a loving Father who desires to guide His children, He has done so again today.
If you believe that God can no longer speak any words beyond what He spoke to Biblical prophets, I have a question for you: in coming to this conclusion are you relying on your own scholarly wisdom, or has God truly witnessed this to your heart?
If the latter, then God has spoken to you, but before you write it down be sure it wouldn't qualify as inspired scripture.
A loving Father has not left us to bicker amongst ourselves with no guidance. He is speaking to us today the same as he has spoken to us in the past.