What's the difference between biblical and postdiluvian?

Biblical

Definition:

(a.) Pertaining to, or derived from, the Bible; as, biblical learning; biblical authority.

Example Sentences:

(1) Roberts can't really explain why Wu Lyf's lyrics are full of neo-biblical imagery – all blood and fire and crowns – nor why one of their main insignia is a cross, but he does admit that he got suspended from secondary school for putting a picture of Ho Chi Minh's face on Christ's body.
(2) Being able to look ahead, being able to make a correct prediction of events and developments has been of great interest to mankind since biblical times and with good reason.
(3) She says that, while she stayed away from the more difficult ramifications of that upbringing, she nevertheless plunged right into the "hot quicksand" of the Arab-Israeli conflict, right down into the Biblical roots of Jewish-Muslim conflict in the story of Abraham, Hagar, Isaac and Ishmael (which she meditates upon in the opera's Hagar chorus), and into the vortex of questions about Israel's right to exist and what motivates terrorists.
(4) It is true that the further you are from the Ebola crisis, the more biblically paranoid you are about the disease.
(5) "Great Yuletide fun on ITV now: hilarious reparations as Dannii Minogue performs a selection of the biblical world's most hideous acts of penance in front of a panel of witheringly critical bisexual judges."
(6) Haemophilia is a rare inherited disease of blood clotting known since biblical times.
(7) Retired neurosurgeon Ben Carson , who is currently positioned second in the polls behind Trump, was given respectful time to explain the medical consensus dismissing what many see as crackpot theories about vaccines and autism – but was only pressed briefly on his own arguably equally crackpot assertion that any form of progressive taxation amounts to socialism and the US should opt for a biblical tithe system instead.
(8) Titanic now comes in behind 1977's Star Wars, 1965's The Sound of Music, 1982's ET: The Extra-Terrestrial, and even the 1956 Charlton Heston biblical epic The Ten Commandments.
(9) When David Moyes was unveiled as Sir Alex Ferguson's successor after 27 trophy-laden years at Old Trafford, the rhetoric was almost biblical.
(10) Eponymous syndrome nomenclature now includes the names of literary characters, patients' surnames, subjects of famous paintings, famous persons, geographic locations, institutions, biblical figures, and mythological characters.
(11) As in a mosque, worshippers remove their shoes before entering the historic building, where biblical quotations are emblazoned on the walls in English, Hebrew and Persian scripts.
(12) On the Israeli side, some also argue for one state, but one in which Palestinians are denied full democratic rights, thus ensuring the Israeli hold on the biblical land of Judea and Samaria (aka the West Bank) and Jewish dominance.
(13) The message which comes from these sanctions is that the biblical standard must be held by all,” he said.
(14) Kony, a self-professed spirit medium intent on governing Uganda using biblical commandments and Acholi traditions, launched his insurgency in 1987.
(15) This paper traces the history of disturbed sleep, deep pain and exhaustion from biblical times to the present.
(16) I look forward to what the least biblical of biblical films will do with this most malleable of texts.
(17) White House officials also revealed the Pentagon was providing “non-lethal” assistance to the Ukrainian military and claimed there were signs of human rights abuses against minorities in Crimea, including the apparent torture of dead Tatar man and “houses marked in a biblical fashion”.
(18) It was a biblical model by which workers in these parts measured their worth to the community.
(19) It was somehow fitting that the day the US and Cuba announced the end of decades of hostilities was also the feast of San Lazaro, or St Lazarus – the biblical figure who rose from the dead.
(20) Mother Abigail's dreams come courtesy of God; she is his prophet, and she assembles her own biblical-type followers.