Oh? He did but you are ignorant of it. Why? The organized religions would automatically discredit themselves and seem over bearing if they taught you what they should be.

Jesus' brother James gave us the definition of God the Father's religion;

Do any of you think you are religious? If you do not control your tongue, your religion is worthless and you deceive yourself. What God the Father considers to be pure and genuine religion is this: to take care of orphans and widows in their suffering and to keep oneself from being corrupted by the world.
(James 1:26-27)