Christ wants to sanctify our body and fill it with the Holy Spirit so that it can be a vessel for Him.
Or do you not know that your body is the temple of the Holy Spirit who is in you, whom you have from God, and you are not your own? - 1 Corinthians 6:19 Solomon’s Temple, perhaps the most beautiful building ever constructed, cannot compare with the temple of our bodies. Just one statistic will suffice: If you took all the blood vessels out of your body and laid them in a straight line, they would stretch close to 100,000 miles. We are fearfully and wonderfully made!
On the Day of Pentecost, the Holy Spirit descended on the believers who were meeting together, and tongues of fire sat upon each of them. They were all filled with the Holy Spirit (Acts 2:3-4). That day the Spirit came down from heaven to indwell every believer, and now our very bodies are His temples. He does His work through our hands, feet, minds, and mouths. He lives within us.
Just as we grieve a little when passing a dilapidated church building, so we should grieve when we don’t care for our bodies as we should. We have a duty to stay as healthy as possible and glorify God through our body, which is the temple of the Spirit.