We have all sinned (done wrong things) and fallen short of God's glorious ideal (Romans 3 verse 23). Jesus Christ God’s Son came to this earth as a human to die on a cross and pay the price for our sins so we can be reconciled to God (Corinthians 15 verses 3-4) . By believing in the Lord Jesus Christ as your saviour and asking Him for forgiveness for your sins you become a born again Christian and a child of God (John 3 verse 16). You will now have an external home in heaven and God’s presence with you always through his Holy Spirit who lives in you.