If you are a believer in Jesus and have been born again by the Spirit, then the Holy Spirit literally dwells inside of you. Your body is His temple, and you were sealed with the Spirit in Christ when you believed. See it in Ephesians 1…

“And you also were included in Christ when you heard the message of truth, the gospel of your salvation. When you believed, you were marked in him with a seal, the promised Holy Spirit,who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession—to the praise of his glory.”