To show that the three parts are categories to the whole. "And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ." -1 Thessalonians 5:23
The Emotional Attitude(Spirit), The Mind and Thoughts(Soul), The Physical Body(Body)
The undisciplined Spirit ranges wildly back and forth between good moods and bad moods. This is because the undisciplined mind thinks in a manner of good and bad (aka: the knowledge of good and evil).
The three parts are in unity with each other. The mind is like the rudder, if focused on things that create anger. Then the attitude, the whole spirit becomes angry. Then the physical body vibrates and display's that which is projected from the Spirit. Yet if the mind is focused on good things then the spirits become full of joy, and joy is displayed in the body.
The analogy can be adjusted to that of a garden, even the smallest thought can grow and cause the spirit to adjust manifesting itself into the physical. But thoughts do not always have the power of changing your spirit. This is a power taught from Jesus.
You see throughout the day you may have intentions of planting good seed in your mind, the enemy may plant weeds into your mind (Matt 13:24-30). So since the bad seed can enter into our mind what are we to do of it. First we are not to pull out the weed, we are not to pull the thought out of our mind (Matt 13:29). Instead we are to bind them and separate ourselves from them. Then his angels will come into your mind and throw those thoughts into the fire, then the good thoughts will continue on towards the spirit to grow fruit.
Even in psychology we have evidence that anger follows after denial in the stages of grief. So faith in God prevents both anger and depression, and as seen even in the stages of grief, acceptance or forgiveness returns one to the vine of joy.
Therefore the Holy Spirit the attitude and emotion of Love can be obtained by all through faith. And we have all been called to separate ourselves from these negative emotions. For anger and wrath are of the Flesh (Galatians 5:19-21). The Flesh is opposite from the Spirit (Galatians 5:17). So we should all cloth ourselves with the spirit (Romans 13:14). For if we fail to wear our wedding clothes, we risk being cast out into the outer darkness, where there is weeping and gnashing of the teeth (Matthew 22:1-14) or in today's expression depression and anger.
So does the indwelling of the Holy Spirit encompass a person's body, soul and spirit? Yes, when there is faith.
Warning though, there is a danger of allowing angry words to escape your lips. You might feel better after you have said your peace and your house is all clean. The evil spirit may gather friends and make your final condition even worse (Luke 11:24-26).
Lucky for use we have Jesus. For anyone who hates themselves will fall. But if those demon weeds are driven out by the finger of God, then the kingdom of God has come upon you. If you stand at the ready and guard your emotions, then your respect and possession of wonderful memories are safe, but when someone someone stronger attacks and overpowers, taking away the excuses that you where trusting in then the spoils of plunder and the value of yourself has fallen.
Whoever is not with Jesus is against Jesus, and whoever does not gather the weeds for Jesus scatters his emotions. By this you can know if you have truly been saved (Luke 11, Mark 4). Amen