John 10:27 says, "My sheep hear my voice, and I know them, and they follow me"
Get to know the voice of God, He talks as often as you need Him. I cannot explain to you my wife's voice, you would have to get to know her, by spending time with her. God talks more than anyone you will ever meet. I cannot explain the voice of my Heavenly Father. To get to know His voice, you would have to spend time with Him. Unless you recognize the voice of the Spirit, obedience is impossible.