To make thine enemies thy footstool", as in Psalm 110:1, signifies to subjugate and keep under the hells. Here a footstool signifies the lowest region under the heavens -- that is to say, the hells. A footstool, as in Psalm 132:7, signifies the Lord's church in the earths.

(सन्दर्भ: Apocalypse Explained 607)

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.

607. And lifted up his hand to heaven, signifies bearing witness before the angels respecting the state of the church. This is evident from the signification of "to lift up the hand to heaven," as being bearing witness before the angels; that it means respecting the state of the church is evident from what follows. That bearing witness before the angels is what is here signified by "lifting up the hand to heaven" may be concluded from this, that bearing witness is expressed by raising the hands to heaven; also from this, that "he sware by Him that liveth unto the ages of the ages that time shall be no more," as immediately follows, and "to swear" is an expression of bearing witness, and the "time that shall be no more" means the state of the church.