We need forgiveness from sins to have the Holy Spirit in us. We need cleansing with the blood of Jesus just as the atonement lamb cleansed the temple and made it for for God's presence once a year.
The blood of Jesus is like the passover lamb. In Exodus, the Israelites were enslaved by the Egyptians (just like we were enslaved by sin). The final curse before God freed His precious people was the nurse of death to the first born of every creature, cows sheep and men. The Israelites killed a lamb, pasted its blood on their door posts and ate it all. That night the angel of the Lord killed all firstborns except those in houses protected by the blood of the lamb. We were cursed and enslaved we needed the blood of a spotless lamb. Jesus freely gave His to free us from the slavery of sin and the curse of death so believe, repent, and be baptised. That is the gospel. Not God is angry with you and will send you to hell for eternal conscious torment if you don't believe He's so loving He needs to torture His son to let you into His presence.