“And Samuel grew, and the LORD was with him, and did let none of his words fall to the ground.” I Sam. 3:19
The idea of the Lord not letting any of the spiritual words we say fall to the ground, meaning that God will uphold them, seems to unrealistic for us that are not called to be prophets. However, this is not unrealistic, in fact it is very reasonable that each of us could speak in such a way. How? Just speak what God says.