Binding and loosing on earth and in heaven

Matthew
Matt. 18:18 is a lesson in not reading verses on their own.  This verse says "I [Jesus] tell you [his disciples] the truth, whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven."
I kind of wondered what that meant, but it is easy to figure out if you read the next verse: "Again, I tell you that if two of you on earth agree about anything you ask for, it will be done for you by my Father in heaven."
These two verses speak to the same thing: what we accomplish here on earth, God will bless and work through it from heaven.  Jesus is really only talking to his disciples here, so we can't take too much leeway with the text and apply it to ourselves, but we can still understand that God gave authority to the disciples to continue Jesus's ministry.