Forgiveness of sins would be followed by the gift of the Holy Spirit, according to Acts 2:38. Such came to pass in Acts 10:43-44. I am sure that if I have received remission of my sins by believing in Christ, I have, as a consequence, received the Holy Spirit. This being so, I need no further experience to know that I am united to Christ, for it is the Holy Spirit dwelling in me who effects this. The experience will follow the consciousness of relationship and will be enjoyed in the cultivation of the things suited to His presence. From Christian Truth, Vol. 17:99