I know what the Bible says, according to the Genesis quote you gave. The problem is ... I don’t know if those tetrads are what is being talked about in Genesis 1:14.
So, they may not be a “sign” from God, any more than the Comet ISON is a sign from God. If the Comet ISON is a “sign from God” - then I would like to know what it is a sign of, or about (if someone happens to think that).
Not everything that happens every single night in the sky is a sign from God. Every lunar eclipse is not a sign from God. Every solar eclipse is not a sign from God. Every comet is not a sign from God. The meteorite that hit Russia a little while back is not a sign from God. Haley’s Comet is not a sign from God. The meteorite that hit Winslow, Arizona and made a mile-wide crater is not a sign from God.
Regardless of the above, though, one thing is for sure, though, there is a pattern in those tetrads, and I’ll be curious to see if something develops in connection with the upcoming tetrad.
But what I do know is that the Bible teaches us that we will understand the times by the signs and seasons (God appointed times), so that is why I will do as commanded when the first one arrives and continue to rid my life of the leaven of religion that has been added to the Word of God as Christ teaches us to do.
So while we have advance notice of the upcoming signs in the sky, it will not be until they come and we see what is happening in the world in regards to God's people, and not just the Jews, but also the Christians as God's signs are for all his people, not just one religion that gave it its name from but one of the twelve tribes of Israel. But whatever we see, it must align with what God has spoken through His prophets as He says that He does nothing without first revealing it through the prophets.
And I will tell you, I am in disagreement with the claims of the establishment of the state of Israel as having anything to do with the previous tetrads. But there were other things happening at the time that do agree with what the prophets wrote, and so I will begin keeping close track of the happenings in the days leading up to and just after Purim as to the brand of leaven we are dealing with during the first blood moon.