Arcana Coelestia # 8231
8231. 'Coming after them into the sea' means that they took possession of them. This is clear from the meaning of 'coming after them' - when said of the waters of the sea, by which falsities arising from evil are meant - as taking possession of.
Romans 7:14-20
14
For we know that the law is spiritual, but I am fleshly, sold under sin.
15
For I don't know what I am doing. For I don't practice what I desire to do; but what I hate, that I do.
16
But if what I don't desire, that I do, I consent to the law that it is good.
17
So now it is no more I that do it, but sin which dwells in me.
18
For I know that in me, that is, in my flesh, dwells no good thing. For desire is present with me, but I don't find it doing that which is good.
19
For the good which I desire, I don't do; but the evil which I don't desire, that I practice.
20
But if what I don't desire, that I do, it is no more I that do it, but sin which dwells in me.