urs is past evolution; 
trll is ignorance; 
jtnar are sweeping up, enthropy, decay of matter;
(is is thin to translate all as giants; -- symbolic language is delicate and precise in icelandic, and in edda)
r is will and endurance;
Mjllnir a device to get rid of ignorance;
Freyja the perpetual dynamism of creative power;
Skai, a daughter of a late urs (jazi) is our will to evolve to highest peaks;
     etc etc etc

Þrymskviða - symbolic language

The symbolic language and the profond meaning of this kvi
Þrymskviða (ryms-kvia):

Þrymur þurs (Thrymur the thurs) is past evolutionary stages -- of an
individual, or of the whole of mankind.

Freyja is the perpetual dynamism of the creative power.

They, Freyja and rymur, are such extremes and so opposed one to the other in our human lives,
that no way they can combine.

We have to get rid of thurses, the past crude stages, and find divinity, the
goddess, within.
This is evolution. This is what myths are all about!!
Evolution is to get away from crude stages towards perfection, siddhi,
towards enlightenment.

For this purpose is life one earth. -- This is the very purpose of life
on earth.  Life-span after life-span.

How we do it is by Þór (Thor) the power and endurance in us. Firm resolve and patience;
with time and daily practice we succeed. 
(Note: not by thinking all day about it, but only by transcending all thoughts daily.)

The tool we use to kill trolls (ignorance)  and urses (past stages, now useless)
 is Mjöllnir (Mjollnir) who grinds obstacles.
(mjll is light snowflakes;  mjllnir is the miller of stuff into flour, fine powder.)

If Mjöllnir is in the hands of ignorance (thurses), hidden from
us, we can not evolve.
We are blind to the very tool that we need: i.e. the destroyer of ignorance: Mjöllnir.

Svastika is su asti ka, and can mean:
a bard who utters words of welcome or eulogy,
lucky or auspicious object -- or a mere mark --, like a cross, or Thors-hammer, to denote good luck,
that svastika rshamar is a solar symbol, but not sun-worship though.

r goes to east to batter trolles and thereby lets into our live the sunshine, the rising sun in us.

Loki, -- i.e. man, men --, is always making mistakes but we, -- deep
inside -- know what life is for: i.e. for evolution towards perfection.

So we, Loki, always have the tendency to put things right again.

Loki is here both the whole of mankind and an individual, each individual.

Evolution is the purpose of life,
gaining perfection is the goal,
and this striving is sramana, sjaman, i.e. a delightful task, delightful
work, that needs endurance and will and power. We have to do it or else we
stagnate in the stage of thurses.

r and inn???