Lal said “One does not need to attain the Arahantship or even the Sotapanna stage, before one can try to explain Dhamma to others (to the extent that one comprehends it). That is what most of us are doing.”
I will clarify it a bit. Most people look at you judgemental way and thru materialistic view – if there is nothing to gain there will be no interested in anything or in any “nonsense” that does not have clear benefits. As my characteristic changed, wisdom and everything people started to take a notice of drastic changes (even in my physical outlook) and started become interested in Dhamma so I think the best way is just to be an example of what Dhamma can do for human being so others will naturally try to figure it out what going on or at least to try to look into Dhamma.
So if you are speaking of Buddha, Dhamma, and Sangha and you are no different then other people and fall in the same traps they will think it’s just another burden for their mind, a philosophy that they will still follow their urges like cattle but just with different concepts and name. One can teach Dhamma or spread Dhamma without being Sotapanna but there is high risk involved that person will be lacking too mach understanding and experience to show people the way of practice.