Stanza 3

Konungsbók	Hauksbók	Combined	Gylfaginning + Variants
R 03	H 03	B 03	Gg 4
Ar uar alda	Aar uar allda	Ár var alda	halda S
þa r er ymir bygði	þar er ymir bygði	þar er Ymir byggði,	þat (þar U) er ecki var SWTU
vara sandr ne ser	vara sandr ne sior	vara sandr né sær	varat - siár W ; sior U ; ser S
ne sualar uN ir	ne svalar unnir	né svalar unnir.	unnir SW , und ir U
iorð faNz eva	iorð fannz efa	Jörð fannsk æva	æfa W , eig i STU
ne upp himin	ne vpp himin n	né upphiminn,
gap uar giNvnga	gap var ginnvnga	gap var ginnunga,
eN gras hv ergi.	enn g ras ecki.	en gras hvergi.	gS S ; ecki STW
When time was young,
where Ymir dwelt,
was no sand, no sea,
nor cool waves;
earth existed not,
nor heaven above,
A chasm gaped,
and  no grass.
Ymir: the giant out of whose body the gods made the world; cf. Vafthruthnismol, 21. in this stanza as quoted in Snorri's Edda the first line runs: "Of old was the age ere aught there was." Yawning gap: this phrase, "Ginnunga-gap," is sometimes used as a proper name.
In the beginning, nothing existed. Can you imagine the concept of just NOTHING? My brain has a difficult time imagining that thought.