During the prelude to theRoman-Seleucid War, Seleucus was put in charge of the re-established colony ofLysimacheia by his father.[5][6] Upon the outbreak of war, Seleucus commanded his own force, unsuccessfully besiegingPergamon,[7] and taking the city ofPhocaea[8] before fighting in theBattle of Magnesia alongside his father.[9] After their defeat at Magnesia, Seleucus was made co-regent in 189 BC[10] and the Seleucids signed theTreaty of Apamea withRome in 188 BC.[11] As part of the treaty, Seleucus oversaw the supply of grain and scouts to Roman and Pergamene forces during theircampaign against the Galatians.[8]
In 187 BC, Antiochus died[11] after looting the Temple ofBel inElymaïs[12] and Seleucus took over as Basileus. He renewed an alliance with theAchaean League,[12] and almost joined inPharnaces I's invasion ofGalatia, before reconsidering and turning back.[10][12] He also substituted his son Demetrius instead of his brotherAntiochus IV as a hostage in Rome.[13]
On September 3, 175 BC (137SE), Seleucus was assassinated byHeliodorus, one of his leading bureaucrats. The ancient sources do not record a motive for this act; possibly it was simple lust for power, or possibly the sources misattributed the death to the one who gained the most from it.[14] Heliodorus took over as regent, ruling on behalf of Seleucus IV's young child Antiochus. Heliodorus's reign as regent was brief, however; months later, he was replaced by Antiochus IV with support from Pergamon.[13][10]
Portrait of Seleucus IV Philopator on the obverse of one of his silver coins.
The book2 Maccabees discusses Seleucus IV, a Jewish text later included as scripture by Christians. In2 Maccabees 3, Seleucus IV sends out Heliodorus on a tax-collecting mission after hearing an inflated report of the Temple's wealth. Helidorus attempts to raid the treasury of theSecond Temple in Jerusalem, but is repelled by angelic beings in a miracle.[15] The incident is also referred to obliquely in theBook of Daniel which states that Seleucus "will send out a tax collector to maintain the royal splendor";[16] the collector is also referred to as an "extortioner" (Jerusalem Bible) or an "exactor oftribute" (Revised Standard Version).
In general, many (non-religious) ancient sources portray Seleucus IV as something of a weak ruler.Lester L. Grabbe cautions that this hostility may be unwarranted from historians who expected skilled kings to go to war. Seleucis IV appears to have run a fairly quiet period of rebuilding, but he managed relations with Rome astutely given the inferior position the Seleucid Empire found itself in after its defeat in the Roman–Seleucid War. A decade of peace would give the Seleucid Empire time to recover its strength.[17]
^Grabbe, Lester L. (2008).A History of the Jews and Judaism in the Second Temple Period: The Coming of the Greeks: The Early Hellenistic Period (335–175 BCE). Library of Second Temple Studies. Vol. 68. T&T Clark. p. 319.ISBN978-0-567-03396-3.