If you merely take the Didache, not as authoritative (i.e., the Didache is not Scripture) concerning faith, doctrine and morals, but as authoritatively representative of what the earliest Church believed and taught, then you would take the Trinity as the "null hypothesis," to borrow a term from statistics (that is frequently misapplied by atheists, but that's another topic), and the evidence against the null hypothesis must rise above all the evidence that is---given the null hypothesis---clearly in support of it. This amounts to a conspiracy theory in the case of the Trinity, that the earliest Church, the Church founded upon the Apostles, had already been utterly destroyed through a massive error in doctrine, by the end of the first century (when the Didache was written). Conspiracy theories aren't ipso facto false, but their defenders have a tremendously high burden of proof to meet in order to overthrow or deny the null hypothesis of the Trinity.
If you can get your mind around the fact that the earliest Church was literally built upon the Apostles of our Lord, and that they busily set about building her up to what she was when the last of the Apostles departed bodily, then you simply can't accept that she was already ruined, and in a fundamental way. To believe and teach the utterly wrong thing about the nature of God is a fatal error for the Church.
I don't believe the Church was stillborn when John died. Therefore, the Trinity.
If you can get your mind around the fact that the earliest Church was literally built upon the Apostles of our Lord, and that they busily set about building her up to what she was when the last of the Apostles departed bodily, then you simply can't accept that she was already ruined, and in a fundamental way. To believe and teach the utterly wrong thing about the nature of God is a fatal error for the Church.
I don't believe the Church was stillborn when John died. Therefore, the Trinity.