What does the Bible say about the Holy Spirit dwelling in us?

According to John 14:15-23, Jesus promised that the Holy Spirit, referred to as the Comforter, will abide with believers forever. He emphasizes that this presence of the Holy Spirit is a vital aspect of the believer's spiritual life. The indwelling of the Holy Spirit signifies that God's triune nature—Father, Son, and Holy Spirit—is present within every redeemed individual. This intimate relationship not only reaffirms the spiritual unity between the believer and God but also equips and empowers the believer in their daily life, encouraging them to live according to Christ's teachings.