Believing he is God is a start.
And yet there at some that would still take a frozen hot dog from the King.John 3:36 uses "believe" as a loaded word -- it contrasts it with disobeying. Just like if I were to order a hot dog, it would mean I also want it cooked, in a bun, with a plate or napkin, possibly with condiments -- not handed over frozen without those other things. To believe means to believe and to obey.
My answer would be:
Third kid....never forgets the day the Father showed so much love to them (cross) and now has 100% trust and places their will in full submission to their Father's requests. Turning the left cheek does not profit 'me' greatly. It pleases God, that's the only reason I do it.The first son obeys because the father said so. He is justified.
The second does it because he sees the profit in having a clean room.
That second example is where every single Christian should be in their life.
You do, because it profits you greatly. You desire it as well as The King desires it.
Same mind, same heart. In sync.
Believing what He says comes after believing who He is. Approving of what He says leads to finding out who He is.
It's funny you know. I first started believing He existed following what I might briefly describe as an encounter with the other side. It certainly prevented me ever thinking there are no forces above us again. Anyway, I've been through that side before but there was another side to me that I don't believe I've ever mentioned.Believing what He says comes after believing who He is. Approving of what He says leads to finding out who He is.
James 2:19 (KJV)
When the speaks of "believing" in the Lord Jesus, it's not simply referring to believing particular facts about the Lord Jesus, such as him being Lord and Savior. Yes a person who believes in Jesus believes in the facts about him - his person, his message. But one who believes IN Jesus trusts him.