I believe he made the contrast to show us that we expect God in outer things. We look for something powerful, big, extra ordinary, thunder but God focus on the relationship with you. Sometime we focus on outer things (distraction) and miss God's voice. This is why we need to quiet ourselves and listen.
God comfort Elijah and gave him a new assignment. We all can be in this isolated place and pity party forgetting how big our God is. God had shown himself mightly through Elijah before this.
We can get confuse in hearing God when our thoughts get in the way. We want God to support what we want. God can speak to us but we can add to it and be disappointed. Lord, teach us how to listen to your voice.