Stanza 2

Konungsbók	Hauksbók	Combined	Gylfaginning + Variants
R 02	H 02	B 02
Ec man iotna	Ek man iotna	Ek man jötna
ár um borna	aar v m borna	ár um borna,
þa e r fordo m mic	þa er forðu m mik	þá er forðum mik
fodda hofdo	fædda hofðv:	fœdda höfðu.
nio man æc hei ma	niu man ek heima	Níu man ek heima,	The R reading:
nío iviþi ur	niu i uidiur	níu íviðjur,	íviði
miot uið moraN	miotvið meran	mjötvið mæran,	is erroneous!
f yr mold neðan.	f yr molld neðan.	fyr mold neðan.
I remember Jötuns
born early on,
those who me of old
have reared.
nine worlds I remember,
nine in the wood,
the great measuring tree,
beneath the earth.
Nine worlds: the worlds of the gods (Asgarth), of the Wanes (Vanaheim, cf. stanza 21 and note), of the elves (Alfheim), of men (Mithgarth), of the giants (Jotunheim), of fire (Muspellsheim, cf. stanza 47 and note), of the dark elves (Svartalfaheim), of the dead (Niflheim), and presumably of the dwarfs (perhaps Nithavellir, cf. stanza 37 and note, but the ninth world is uncertain). The tree: the world-ash Yggdrasil, {footnote p. 4} symbolizing the universe; cf. Grimnismol, 29-35 and notes, wherein Yggdrasil is described at length.
Here we have our first depiction of Yggdrasil, the great world tree, and the nine realms of being. Odin is telling us of his memories, of the giants, and of his upbringing. Many people seem to forget that Odin himself was born of giants.. He is the grandson of Buri the first Æsir, and he is the son of the half-God, half-giant Bestla and Bor.