George Mueller, say, before he goes out and does anything, “I must have my heart happy in God or I will be of no use to anybody. I’ll use them and try to get them to satisfy my cravings and my vacancies.” If you want to be a person of love, if you want to be released to lay down your lives for other people, you must make it your aim to be happy in God. That’s today’s message: we are far too easily pleased.
John Piper