The believers are the temple of God. How is this possible? Based on 1 Corinthians 6:19, this article explains that the work of Christ made it possible that the Holy Spirit can dwell in the believer, thus making him His temple.
It is only on the basis of Christ's work that God can come and dwell among his people. This article shows that this dwelling is done by the Holy Spirit in believers, as revealed in 1 Corinthians 3:16.