BC:4001

Millennium:	5th Millennium BC
Centuries:	42nd cent. BC – 41st cent. BC 41st cent. BC
Decades:	4010s BC – 4000s BC 3990s BC 3980s BC 3970s BC 3960s BC 3950s BC
Years:	4004 BC 4003 BC 4002 BC – 4001 BC – 4000 BC 3999 BC 3998 BC

4001 BC in other calendars

Gregorian calendar	4001 BC IV BC
Assyrian calendar	750
Bengali calendar	−4593
Berber calendar	−3050
Buddhist calendar	−3456
Burmese calendar	−4638
Byzantine calendar	1508–1509
Chinese calendar	己卯年 (Earth Rabbit) −1304 or −1364     — to — 庚辰年 (Metal Dragon) −1303 or −1363
Coptic calendar	−4284 – −4283
Discordian calendar	−2834
Ethiopian calendar	−4008 – −4007
Hebrew calendar	−240 – −239
Hindu calendars
- Vikram Samvat	−3944 – −3943
- Shaka Samvat	N/A
- Kali Yuga	−900 – −899
Holocene calendar	6000
Iranian calendar	4622 BP – 4621 BP
Islamic calendar	4764 BH – 4763 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	−1667
Minguo calendar	5912 before ROC 民前5912年
Nanakshahi calendar	−5468
Thai solar calendar	−3458 – −3457

The year 4001 BC is a 3 years from the estimated date of the creation of the world. Either Adam and Eve were still enjoying the Garden of Eden at this time, or they were already expelled from it. The Bible doesn't clearly say when they were expelled from the Garden.