36. That a trinity of Gods is contrary to Holy Scripture is well known, for it is written:

Am not I Jehovah? and there is no God else besides Me; a just God and a Saviour there is none besides Me.Isaiah 45:21-22.

I, Jehovah, am thy God... and thou shalt acknowledge no God besides Me for there is no Saviour besides Me. Hosea 13:4.

Thus saith Jehovah the King of Israel, and His Redeemer, Jehovah Zebaoth: I am the First and I am the Last, and besides Me there is no God.Isaiah 44:6.

Jehovah Zebaoth is His Name, and thy Redeemer the Holy One of Israel; the God of the whole earth shall He be called.Isaiah 54:5.

In that day... Jehovah shall be King over all the earth; in that day there shall be one Jehovah and His Name One. Zechariah 14:9.

There are also many more such passages.

As with many common verbs, the meaning of “to say” in the Bible is highly dependent on context. Who is speaking? Who is hearing? What is it about? Is it a command, a message, an apology, instruction? All these things enter into the meaning of “say.” In general, though, “saying” has to do with sharing truth at various levels -- from the most exalted power people can have to perceive the Lord's desires directly to the most basic of orders issued to people at their lowest.