The fact is every Christian has the Holy Spirit living inside of them. The Holy Spirit is God and a personal being which guides, leads and nurtures us into becoming more Christlike.
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’ Ephesians 1:13
What the Holy Spirit touches, the Holy Spirit changes. When we are led by the Spirit, our choices and decisions become guided by God’s love and grace. We remain obedient to His Word and solely focus on living by faith in Christ. The manner in which He transforms and sanctifies us is through an ongoing journey in knowing God and being filled with the Spirit.