The thing Jesus didn't do was start a religion.
His teaching was all about how we treat one another — encouraging us firmly towards kindness and understanding, trust and simplicity, humility and mercy.
When the zealous tried to make him their leader, he took off. When they tried to elevate him to leadership he found a donkey, the ordinary man's humble steed, to say, "Yes, okay, but this kind of leader." When they called him "Master" and "Teacher", he accepted the accolade as accurate, but took a towel to wash their feet and said, "Like this."
He consistently pushed against the boundaries and challenged the strictures of the religion in which he was raised. No healing on the Sabbath? Really? Why not? No women in here doing theology with the men? Why not? Give family priority access? Why? Anyone can be my family. Not go to tea with a tax collector? Why not? Don't let that woman touch you? Why not? Throw stones at her? Why? Haven't you done things you're ashamed of too?
His criteria for godliness were nothing at all to do with doctrine, and were all about helping other people, generosity, acceptance, and a childlike spirit.
He lived in radical simplicity and the Spirit flowed through him in massive power for healing, sanity, and for bringing peace not to human beings only but across the boundaries of species: life listened to him and believed him. He lived with 100% authenticity and as a result could do what we call "miracles". Miracles are thought to be a suspension of the laws of physics, divine intervention into quotidian reality; actually they are incorporated into the realm of physics but are kicked into touch by hypocrisy, lies and constructed personas. When he said we could do even greater things than he did he wasn't kidding, but we hobble our capacity by our failure to live, speak and recognise truth.
After Jesus came Christianity, which does and does not have anything to do with him. About 300 years after Pentecost, the Council of Nicea nailed things down into a creed. But creeds are to faith what Tupperware is to manna. It goes off. Faith in Christ can only be lived, it cannot be formulated. As soon as you organise it, tabulate it, set it as dogma and doctrine, it ossifies, it goes schlerotic, it turns into something else.
Christianity, as organised religions go, has the capacity to be something very beautiful. As a faith system it has done a lot of good. It has also acted as a huge cloak for abuse and torture and caused untold misery of course, but that's people for you — it need not have done. Christianity remembers Jesus, talks about Jesus, points toward Jesus — at its best; it does also systematically trash everything Jesus ever stood for, sometimes.
But Christianity is not and never can be a substitute for knowing and walking with Jesus. That is something completely different. The creeds and leadership structures, the buildings and denominations and training schemes and accreditations and synods and imprimaturs and validated liturgies are all very well if you like that sort of thing, but in the end they are not the real deal.
"He has shown you, O man, what is good. And what does the Lord require of you but to do justice, and to love mercy, and to walk humbly with your God." It doesn't need a book, a set form or a certificate. It's all, entirely in your heart, or it simply isn't real.