Isis at Byblos

Several versions of the Isis myth are readily found online. Here's one we have by way of Plutarch, which begins from the point when Isis has learned that Set, or Seth, has killed her brother/husband Osiris:

Isis on [hearing] the news, sheared off one of her tresses, and put on a mourning robe, whence the city, even to the present day has the name of “Copto” (I beat the breast). . . . She learnt by inquiry that the chest had been washed up by the sea at a place called Byblus [Byblos], and that the surf had gently laid it under an Erica tree. This Erica, a most lovely plant, growing up very large in a very short time had enfolded, embraced and concealed the coffer within itself. The king of the place being astonished at the size of the plant, and having cut away the clump that concealed the coffer from sight, set the latter up as a pillar to support his roof. 

They tell how Isis having learnt all this by the divine breath of fame, came to Byblus, and sitting down by the side of a spring all dejected and weeping spoke not a word to any other persons, but saluted and made friends of the maid servants of the queen, by dressing their hair for them, and infusing into their bodies a wonderful perfume out of herself; when the queen saw her maids again, she fell a longing to see the stranger, whose hair and whose body breathed of ambrosial perfume; and so she was sent for, [and] becoming intimate with the queen, was made nurse of her infant. The king’s name they say was Malacander, herself some call Astarte, others Sooses, others Neinanoë, who is the same with the Greek Athenais. 

Winged Isis

Isis is said to have suckled the child by putting, instead of her nipple, her finger into his mouth, and by night she singed away the mortal parts of his body. She turned herself into a swallow and flew around the pillar until the queen watched her, and cried out when she saw her child all on fire, and so took away the boy’s immortality.* Then the goddess, manifesting herself, asked for the pillar of the roof, and having removed it with the greatest ease, she cut away the Erica that surrounded it. This plant she wrapped up in a linen cloth, pouring perfume over it, and gave it in charge of the king; and to this day the people of Byblus venerate the wood, which is preserved in the temple of Isis.


*Note the strong resemblance of this part to the story of Demeter in the Homeric Hymn. 

Plutarch

A more detailed version of the story is here.

Osiris Isis Horus

Enter Isis

Ovid nears the realm of Egypt with his tale of Byblis, but when he returns to Crete to tell of Iphis and Ianthe, the gods of Egypt make their official entrance into the Metamorphoses.

Some myths and tales of Isis and Osiris are found in "an olde boke," as Chaucer might say, entitled The Mythology of All Races, by Gray, Moore, and MacCulloch. Published in 1918, this book is available free from Google Print.

Above: Isis and Harpocrates appear as though in a small temple. Isis wears her traditional lunar disk between two cow horns, with a lotus flower and ears of corn held in her right hand. On the head of Harpocrates is the crown of Lower and Upper Egypt. Temples to the ancient Egyptian goddess Isis were built throughout the Roman empire, including Rome itself. (Source)

A story about Isis:

Isis wasn't just a mother - she was also a great magician. She became one of the most powerful magicians in Egypt when she managed to trick Ra into revealing his secret name to her. 

Thus when she wished to make Ra reveal to her his greatest and most secret name, she made a venomous reptile out of dust mixed with the spittle of the god, and by uttering over it certain words of power she made it to bite Ra as he passed. When she had succeeded in obtaining from the god his most hidden name, which he only revealed because he was on the point of death, she uttered words which had the effect of driving the poison out of his limbs, and Ra recovered. Now Isis not only used the words of power, but she also had knowledge of the way in which to pronounce them so that the beings or things to which they were addressed would be compelled to listen to them and, having listened, would be obliged to fulfil her bequests. (Source)

Isis with lunar disc and horns (temple at Philae):

Philae, Temple of Isis

Words and Things

Telethusa and Isis

The Iphis and Ianthe tale can been seen as a pendant to that of Byblis and Caunus. For Byblis, the central task was to use all the powers of naming and persuasion to overcome a cultural convention that was the obstacle to her desire -- the taboo of incest.

Iphis has avoided death because of the holy lie (pia mendacia) that she is a man. But at the moment that she is to espouse Ianthe, she confronts the reality that no amount of feigning, no sleight of hand, words or dress, can change the truth:

Even now, no part of my prayers has been denied. The gods have readily given whatever they were able, and my father, her father, and she herself, want what I want to happen. But Nature does not want it, the only one who harms me, more powerful than them all.

Iphis is looking at the realm of human conventions and realities from a perspective beyond them -- from that of nature. Between the realm of words, what we call or style things, and the nature of things, there's a substantial gap.

A comment from a conversation with a physicist reminded me of the plight of Iphis:

Ms. Levin: . . . I have a hard time becoming obsessed with internal, um, social norms, how you're supposed to dress or wear your tie or … 

Ms. Tippett: OK. 

Ms. Levin: … who's supposed to — you know, for me, it's so absurd, because it's so small and it's so — this funny thing that this one species is acting out on this tiny planet in this huge, vast cosmos. So I think it is sometimes hard for me to participate in certain values that I think other people have. So in that sense, yeah, I guess there is a shift of what I think is significant and what I think isn't. And if I try to look at that closely, I would say the split is, things that are totally constructed by human beings, I have a hard time taking seriously, and things that seem to be natural phenomenon, that happen universally, I seem to take more seriously or feel is more significant. 

Ms. Tippett: Well, give me an example. I mean, I think sometimes it's hard to draw the line. Give me an example of something for you that would be totally humanly constructed and then the other one. 

Ms. Levin: Actually, this is going to sound really dangerous, but even things like who we elect as an official in our government. Of course, I take very seriously our voting process and I'm, you know, very, try to be politically conscious. But sometimes, when I think about it, I have to laugh that we're all just agreeing to respect this agreement that this person has been elected for something. And that is really a totally human construct that we could turn around tomorrow and all choose to behave differently. We're animals that organize in a certain way. So it's not that I completely dismiss it or don't take it seriously, but I think a lot of the things we are acting out are these animalistic things that are consequences of our instincts. And they aren't, in some sense, as meaningful to me as the things that will live on after our species comes and goes. Does that make any sense? 

Theoretical Physicist Janna Levin from On Being

Bonus link: An animated version of the tale of Iphis and Ianthe.