Sometimes, you get home early enough to catch the whole family still wide awake. Sometimes, you get home late enough to hear no annoying, ear-damaging noises from your neighbor’s television set.
Either case, he waits for you. If you say you’ll get home at this time–and you don’t–he won’t welcome you back with nagging and endless sermons. He’s disappointed, maybe, but he knows you’re tired, and you need your sleep.
It’s good to know that you may not always keep your end of the bargain (due to unexpected circumstances), but he always chooses to trust you. And you wouldn’t want to break that kind of trust.
Especially if it’s your father’s.