When they are saying, “Peace and security,” it is then that sudden destruction will come upon them, like labor pains (ōdin | ὠδίν | nom sg fem) upon a woman with child, and they will not escape.

whom God raised up, loosing the pangs (ōdinas | ὠδῖνας | acc pl fem) of death, as it was not possible for him to be held by it.

For nation will rise against nation and kingdom against kingdom. There will be earthquakes in various places; there will be famines. These are the beginning of birth pains (ōdinōn | ὠδίνων | gen pl fem).

But all these things are only the beginning of birth (ōdinōn | ὠδίνων | gen pl fem)

And they sing the song (ōdēn | ᾠδήν | acc sg fem) of Moses the servant of God and the song (ōdēn | ᾠδήν | acc sg fem) of the Lamb, saying, “Great and marvelous are your deeds, O Lord God Almighty! Just and true are your ways, O King of the nations!

and they were singing a new song (ōdēn | ᾠδήν | acc sg fem) before the throne and before the four living creatures and the elders. No one was able to learn the song (ōdēn | ᾠδήν | acc sg fem) except the one hundred and forty-four thousand who had been redeemed from the earth.

And they sang a new song (ōdēn | ᾠδήν | acc sg fem), saying, “Worthy are you to take the scroll and to open its seals, for you were slain, and by your blood you ransomed people for God from every tribe, language, people, and nation.

Let the word of Christ dwell in you richly with all wisdom as you teach and admonish one another with all wisdom by means of psalms, hymns, and spiritual songs (ōdais | ᾠδαῖς | dat pl fem), spiritual singing with gratitude singing in your heart your to God.

speaking to one another in psalms and hymns and songs (ōdais | ᾠδαῖς | dat pl fem) inspired by the Spirit; singing and making melody in your heart to the Lord,

“This (hōde | ὧδε | adverb) calls for a mind with wisdom. The seven heads are seven mountains on which the woman sits. They are also seven kings: