"We proclaim the gospel to the world so that they may be saved."
If you've ever been locked out of a place you were desperately needing to get into (especially if it was urgent), you know how frustrating it can be not to have the key to get in. Many of the doors in our lives have but one key each and we keep them in a special place, knowing that it's in our best interest not to lose them. When you're seeking to unlock that old shed, your everyday house key won't do. You need the key with the perfect fit.
Yet we know that locks can be picked. As our church's resident locksmith knows, where there's a will, there's a way. Especially considering today's use of electronic locks, it is possible to hack your way past any locked barrier if you have the right amount of knowledge and skill.
Not so with heaven.