Sending a fool with a crucial message is self-defeating — the message will be garbled, delayed, or turned to harm. 'Cutting off the feet' pictures removing one's own ability to act effectively. To trust a fool with important tasks is to guarantee failure and damage.
Memory phrase: Trust wise people with important things.
Talk about it: Why is it important to choose the right person for an important job?
Prayer: God, help me to be trustworthy and reliable.