"I received from the Lord what I also handed on to you you, that the Lord Jesus, on the night he was handed over, took bread, and after he had given thanks, broke it and said, 'This is My body that is for you. Do this in remembrance of me.' In the same way also the cup, after supper saying, 'This cup is the new covenant in my blood. Do this, as often as you drink it, in remembrance of me.' For as often as you eat this bread and drink the cup, you proclaim the death of the Lord unitl he come." I Cor.11:23-26.
When we start handing on things we have not received from the Lord Jesus and His apostles, His body the Church, we are building on sinking sand. We may gather crowds, but we are not building the kingdom of God, but something of our own imagination. Terrifying, actually.