In Exodus 15:8, this signifies falsities gathered together. Waters normally signify truths, but in this case, where they were blocking the escape of the Children of Israel from slavery and signify the opposite: falsities.

(References: Arcana Coelestia 8286)

It seems rather circular to say that “good” in the Bible represents good, but in a general sense it's true! The case is this: The Lord is love itself given form and expression as wisdom itself, and that Divine Love and Divine Wisdom flow down into us, into the world and into the Bible in an unending stream with endless variety. Divine Love gives rise to our loves, our affections, our desires for good and the joy we can feel; Divine Wisdom gives rise to facts, knowledge, intelligence, understanding and human wisdom. And the more we can bring those two aspects of our lives into harmony, the more elevated we can become -- which will in turn make us happier, more useful, and ultimately more angelic.