Early years According to the reconstruction of events by
Kenneth Kitchen, Osorkon IV ascended to the throne of Tanis in c. 730 BC, after the long reign of
Shoshenq V of the 22nd Dynasty, who was possibly his father and predecessor. However, this view was first challenged in 1970 by Karl-Heinz Priese, who preferred to place Osorkon IV in a lower–Egyptian branch of the
23rd Dynasty, just after the reign of the shadowy pharaoh
Pedubast II; this placement found support among certain scholars.
Aidan Dodson omitted Pedubast II and had Shoshenq V followed immediately by Osorkon IV, but still placed the latter in the Tanite 23rd Dynasty. More recently, Frédéric Payraudeau placed
Sehetepibre Pedubast II at the start of the Tanite 23rd Dynasty, and has him succeeded by Osorkon IV. Osorkon's mother or wife, named on an
electrum aegis of
Sekhmet now in the
Louvre, was
Tadibast III. Osorkon IV's realm was restricted only to the district of Tanis (
Rˁ-nfr) and the territory of
Bubastis, both in the eastern
Nile Delta. His neighbors were Libyan princes and
Meshwesh chiefs who ruled their small realms outside of his authority. Around 729/28 BC, soon after his accession, Osorkon IV faced the invasion of the
Kushite pharaoh Piye of the
Nubian
25th Dynasty. Along with other rulers of Lower and
Middle Egypt – mainly
Nimlot of
Hermopolis and
Iuput II of
Leontopolis – Osorkon IV joined the coalition led by the Chief of the West
Tefnakht in order to oppose the Nubian. However, Piye's advance was unstoppable and the opposing rulers surrendered one after another: Osorkon IV found it wise to reach the Temple of
Ra at
Heliopolis and pay homage to his new overlord Piye personally— an action which was soon imitated by the other rulers. As reported on his
Victory Stela, Piye accepted their submission, but Osorkon and most of the rulers were not allowed to enter the royal enclosure because they were not
circumcised and had eaten fish, both abominations in the eyes of the Nubian. Nevertheless, Osorkon IV and the others were allowed to keep their former domains and authority.
The Assyrian threat In 726/25 BC
Hoshea, the last
King of Israel, rebelled against the Assyrian King
Shalmaneser V who demanded an annual tribute, and, according to the second Book of Kings, sought the support of
So, King of Egypt (
2 Kings 17:4) who, as already mentioned, was most likely Osorkon IV (see below). For reasons which remained unknown – possibly in order to remain neutral towards the powerful
Neo-Assyrian Empire, or simply because he did not have enough power or resources – King So did not help Hoshea, who was subsequently defeated and deposed by Shalmaneser V. The Kingdom of Israel ceased to exist, many Israelites were
brought to Assyria as exiles, and Assyrian and Babylonian settlers occupied Israel.
Battle of Raphia (720 BC) In 720 BC, a revolt occurred in Palestine against the new Assyrian King
Sargon II, led by King
Hanunu of Gaza who sought the help of "Pirʾu of Musri", a term most probably meaning "Pharaoh of Egypt" and referring to Osorkon IV. Assyrian sources claim that this time the Egyptian king did send a
turtanu (an army–commander) called
Reʾe or
Reʾu (his
Egyptian name was Raia, though in the past it was read
Sibʾe) as well as troops in order to support his neighboring ally. However, the coalition was defeated in battle at
Raphia. Reʾe fled back to Egypt, Raphia and
Gaza were looted and Hanunu was
burnt alive by the Assyrians. In 716 BC, Sargon II almost reached Egypt's boundaries. Feeling directly threatened this time, Osorkon IV (here called
Shilkanni by Assyrian sources, see below) was carefully diplomatic: he personally met the Assyrian king at the "
Brook of Egypt" (most likely
el-Arish) and tributed him with a present which Sargon personally described as "twelve large horses of Egypt without equals in Assyria". The Assyrian king appreciated his gifts and did not take action against Osorkon IV.
End No mention of Osorkon IV is known after 716 BC. Some archaeological evidence suggest that shortly after this date,
Bakenranef of the
24th Dynasty expanded his realm eastward, taking over Tanis. In 712 BC, Piye's successor
Shebitku marched northward and defeated Bakenranef. When around the same year King
Iamani of
Ashdod sought refuge from Sargon II in Egypt, Shebitku was in fact the sole ruler of Egypt, and returned Iamani to the Assyrians in chains. In any case, Osorkon IV was seemingly dead before that year. Whether it was Osorkon IV or a successor who was possibly supplanted by Bakenranef, Osorkon IV's line appears to have survived for decades. His immediate successor seems to have been the recently identified King
Neferkare Pami II, who was eventually followed at Tanis by
Shepseskare Gemenefkhonsbak, Sekhemkare, and Pedubast III. ==Identification with Shilkanni and So==