1 Corinthians 6:19

Another rhetorical question makes a strong, important statement. Previously Paul taught his readers that the Corinthian church was a temple (naos; 1 Corinthians 3:16). The believer’s body is also one. The Holy Spirit is really indwelling each of these temples (Romans 8:9; cf. Matthew 12:6; Matthew 18:15-20; Matthew 28:16-20; Mark 13:11; John 14:17; John 14:23). [Note: See Sweeney, p. 629.] He is a gift to us from God (cf. 1 Thessalonians 4:8). He is the best gift God has given us thus far. Consequently we have a moral obligation to the Giver. Moreover because He indwells us we belong to Him.