God has masterfully crafted us as beings that are comprised of a physical body and a spiritual nature. Within those two components are various additional aspects such as our mind, spirit/soul, and emotional state.  In Hebrew thought, our very center of being in which everything (emotions, thoughts, behaviors, etc.) flows out from is our levav or lev (Heb. heart). It seems that when the Lord explains we are to love Him with all our heart, all our soul, and all our strength, He connects our worship holistically (Deuteronomy 6:5). As part of our nature, God has given us the gift of feeling and expressing emotion to Him, others, and to ourselves. We see that God does not express Himself as a cold, marble statue that is unfeeling and robotic, but rather the Scriptures reveal His joy for us, His grief, His righteous anger, and His merciful compassion on us (Luke 15:10; Genesis 6:6; Romans 1:18; Matthew 9:36). As His image bearers, we too share in this ability, albeit not a perfect ability, to have and express emotion.