Hebrews 4:12 (NLT)
12 For the word of God is alive and powerful. It is sharper than the sharpest two-edged sword, cutting between soul and spirit, between joint and marrow. It exposes our innermost thoughts and desires.
God's word cuts between the soul and the spirit. In other words it lets us know what's earthly and what's eternal. What's me and what's Him. What's good and what's God. In my soul is where my emotions, my will, and my thoughts are housed. But in my spirit is where I'm alive in Christ. By spending time in His Word, I'm able to know what's me and what's Him. A few verses before this one, the scripture says, Today when you hear his voice, don't harden your hearts. I know this, when I hear His voice and respond to it then my life takes on new meaning. When I've listened to my own, not so much. The key to life is knowing His voice and believing what He says. Have a great day.