I can’t go to the gym, because I haven’t paid the membership fee and don’t have the membership card. This card doesn’t just give you access to the building, it’s so much more than that – you have access to everything inside, all areas of the building are open to you.
Just like a membership card gets us into the gym – Jesus got us into heaven. No membership card/fee needed. I love what v.19 says, “Now you are no longer strangers to God and foreigners to heaven, but you are members of God’s very own family”