If you’re going to ask someone to take on a responsibility, make it short. Not the responsibility… but the “ask”.
If you make the “ask” long and wordy, it will communicate that this task you’re offering them is so huge, so massive, so immense, that you have to take a long time to ask them. Instead, make it short.
“Hey Bill, could you lead a growth group night in a few weeks?”
Don’t say anything else. Just stop there. Let them answer. If they say no, that’s fine, all the words in the world probably wouldn’t have changed their mind anyway.
If they say, “Maybe” you can ask them what their concerns are, and you can address those concerns.
If they say yes, you can then go through the details they need to know.
If you make the ask BIG, then you’ll only freak them out by the apparent BIGNESS of the task.