From:-http://www.religioustolerance.org/ev_date.htm
Conflict between theology and science, and why it is critical:
Back in 1991, scientists made many estimates of the age of the universe, ranging from 7 to 20 billion years. These were based on the crude models then available to scientists. Since then, estimates have been refined; most have grouped around 14 billion years.
Currently, there is a near consensus among earth scientists that the age of "
Earth and [the rest of] our solar system is 4.54 billion years, plus or minus 0.02 billions years." 1 This estimate is based on:
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The measured age of the oldest rocks on earth -- small crystals of zircon found in the Jack Hills of Western Australia. [/font][font=trebuchet ms,arial,helvetica]
The measured age of meteorites which have landed on earth.[/font][font=trebuchet ms,arial,helvetica]
Both estimates are in conflict with the most common interpretations of the biblical accounts of creation, which are 6,000 to 10,000 years. The difference is factor of about half a million times. As author Henry Morris wrote: "
...the Biblical chronology is about a million times shorter than the evolutionary chronology. A million-fold mistake is no small matter, and Biblical scholars surely need to give primary attention to resolving this tremendous discrepancy right at the very foundation of our entire Biblical cosmology. This is not a peripheral issue that can be dismissed with some exegetical twist, but is central to the very integrity of scriptural theology."
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Many conservative Protestants are keen to prove that the earth is young -- under 10 millennia old:
[/font][font=trebuchet ms,arial,helvetica]The web site
ChristianAnswers.net states: "
If Evolution by natural processes from 'amoeba' to man is possible, as Evolutionists maintain, it would undoubtedly require billions of years to accomplish. A younger universe would make Evolution impossible."
1,3[/font][font=trebuchet ms,arial,helvetica]Author R.L. Wysong wrote: "
Both evolutionists and creationists believe evolution is an impossibility if the universe is only a few thousand years old. There probably is no statement that could be made on the topic of origins which would meet with so much agreement from both sides. Setting aside the question of whether vast time is competent to propel evolution, we must query if vast time is indeed available."
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Basis for dating biblical creation
The creation stories in the Bible start at Genesis 1:1. They are undated. To compute a probable date of creation from the biblical record, it is necessary to work backwards from a date that is known from the historical record.
The earliest event in the Bible that can be dated with reasonable certainty is the beginning of Saul's reign as the first king of Israel. It is generally believed to have occurred about 1020
BCE, at a time when Egypt and Assyria were weakened and the Israelites were able to assert domination over their own territory. Many theologians have attempted to compute the date of creation by working back from this or a similar known date, through the various time intervals mentioned in the Bible. For example:
[/font][font=trebuchet ms,arial,helvetica]Most contemporary historians establish a base date of Saul's accession to the throne of Israel to have happened 1020 BCE. However, Bishop James Ussher, a 17th century Irish archbishop from Armagh, Ireland, estimated this date as 1095 BCE in his work:
Annales Veteris et Novi Testamenti[/font][font=trebuchet ms,arial,helvetica]Work backwards through the Book of Judges. Ussher computed 330 years for the duration of the rule of Judges. He based this on the intervals specified in the Hebrew Scriptures. Modern theologians believe that the "Judges" did not rule over all of Israel in a regular sequence. Instead, each Judge controlled separate tribe(s), so that their interval of rule overlapped. A modern estimate for the duration of time covered by the Book of Judges is perhaps 180 years.[/font][font=trebuchet ms,arial,helvetica]If Joshua's conquest of Canaan happened, it would have occurred circa in the 13th century BCE which was a time when Egypt's influence over the area was at a low ebb. Bishop Ussher estimated that it began in 1451 BCE; that is unlikely because Egyptian power was at its peak at that time and completely dominated the area. In reality, if it did happen, it probably occurred in about 1237 BCE under Pharaoh Rameses II, a time when Egypt was in steady decline.[/font][font=trebuchet ms,arial,helvetica]Ussher dated the arrival of Abraham in Canaan to 2126 BCE and the Noahic flood at 2349 BCE. The latter is unlikely, because historical records in China and Egypt continued without disruption through that date, and contain no record of a massive world-wide flood that would have wiped out their civilizations.[/font][font=trebuchet ms,arial,helvetica]Ussher was able to use the ages of famous pre-flood personages in the Bible to estimate the number of years between creation and the flood. In 1650 CE, he published his book
"Annales veteris testamenti, a prima mundi origine deducti" ("Annals of the Old Testament, deduced from the first origins of the world.") He calculated that God had created the Earth in 4004 BCE. A decade earlier, Dr. John Lightfoot, (1602 - 1675), an Anglican clergyman, rabbinical scholar, and Vice-Chancellor of the University of Cambridge had already arrived at an estimate of
4004-OCT-23 BCE, at 9 AM. (We assume that this was either Greenwich Mean Time (GMT) or Jerusalem time). Unfortunately, Ussher gets most of the credit; Lightfoot's contribution is rarely cited.
This would make the time interval between the creation of the world and a common estimate of the birth of Christ at precisely 4000 years. Some people believe that Ussher fudged the data to make it come out this neatly. This date found general acceptance among many Christians; "
...his dates were inserted in the margins of the authorized version of the English Bible and were soon practically regarded as equally inspired with the sacred text itself..."
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There are two inherent and unavoidable sources of error that are often overlooked in these calculations:
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The calculation must rely on numerous passages which state that a person was born when his father was of a certain age. But if a 30 year-old man has a son, the birth might have occurred at any time between the father's 30th birthday, and one day before his 31st birthday. Thus, on average, an error of six months is introduced with each father-son passage.[/font][font=trebuchet ms,arial,helvetica]
Some theologians have pointed out that there may be missing generations in Bible chronologies. The entire family tree may not be fully listed. Some "sons" are actually grandsons. "In Exodus 6:16-20, we find only four generations listed between Levi and Moses. The International Standard Bible Encyclopedia states: 'It seems quite clear that some generations were omitted in the compilation' (rev. ed., s.v. 'Genealogy'). In Matthew 1:1-17, the Gospel writer deliberately omits three kings to illustrate the theological point he is making, a point that depends upon a generational pattern."
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I hope that helps...........