Genesis 3:8 And they heard the voice of the LORD God walking in the garden in the cool of the day: and Adam and his wife hid themselves from the presence of the LORD God among the trees of the garden.
When God hears, He answers. The Spiritual world exists, but we aren't always listening to God. Adam and Eve both heard God's voice after they sewed the fig leaves together for clothes. What was God saying? That's not recorded. But, when Adam and Eve heard, they ran and hid in the woods from God. So, God called out Adam's name, like a parent playing a game of hide-and-seek with his child.
My Mom says I used to enjoy hiding and they would be scared to death, until they finally realized I was stooped down hiding under the kitchen sink, or in the back floorboard of the car, or any small place. Then I would come out laughing when they found me. But, I was just a preschooler. I was just playing around because I thought it was funny to scare them to death. I thought they sounded comical darting about the house frantically searching for me. I could hear their voices, and believe me, it was funny. I knew something they didn't know. They couldn't see me. I squatted in my hiding place imagining the house from their perspective, and what it must look like without me. I could just imagine what they looked like by the sound of their voices, and their shoes on the floor. And, they were so funny.......
I would love to know what God was saying, when they heard Him talking. They knew He was coming, before they saw Him coming. They heard His voice. God's voice precedes His presence. Listen for His voice, and you will find yourself in His presence.