Now you believe the Church went into apostasy at some point. But you do not know “when”.
There is no single date at which suddenly the whole early church turned completely apostate, but there are many doctrines and practises that do not fit well with the Biblical teachings of Christ and His apostles (The Trinity, Prophets, revelation) in addition to scriptural prophecies that an apostasy was foretold.
Really? Which things? The bees? The elephants? Steel? Reformed Egyptian? Entire civilizations that had zero contact with any actual civilizations of the time and left no trace of their existence except some supposed golden plates? The horses?
Well, where to begin.
Writing on plates in the ancient world: this is something that Joseph Smith was ridiculed for suggestion when he first claimed to have found this record. It was completely unknown even to scholars in his day, yet now is known to have been a practise among the Jews and other nations living in the regions round about with who they had contact and trade.
(
jefflindsay.com/LDSMetal.shtml)
While on the subject of the plates, their manner of concealment: buried in a stone box and sealed up. “No such records were ever engraved upon golden plates, or any other plates, in the early ages” [M.T. Lamb, The Golden Bible, or, the Book of Mormon: Is It from God? (New York: Ward & Drummond, 1887), p. 11], yet since the discovery of the Dead Sea Scrolls this idea has found much more prominence as an established practise.
(
jefflindsay.com/bme10.shtml)
And still on the subject of the plates, how about the use of metal: steel as you pointed out. Are we to apply the same principle to the Old Testament also, therefore it must be found to be false due to references to steel in 2 Sam. 22:35 (which refers to a steel bow, perhaps similar to the one Nephi had), Psalms 18:34, Job 20:24, and Jeremiah 15:12? “It seems evident that by the beginning of the tenth century B.C. blacksmiths were intentionally steeling iron” [Robert Maddin, James D. Muhly, and Tamara S. Wheeler, “How the Iron Age Began,” Scientific American 237/4 (October 1977): 127].
(
jefflindsay.com/LDSFAQ/FQ_metals.shtml)
Well, that’s three; but let’s have a look at what else there is.
Also right at the start of The Book of Mormon, the story of a journey through the Arabian peninsula. In Joseph Smith’s day, in upstate New York, little was known about this area; a prime candidate to set a hoax, clearly, as nobody would be able to pick up on it with proper evidence to the contrary. Because what was known was that this area is primarily desert, Joseph Smith was ridiculed for his suggestions that a trip cold be made such as is described, especially through fertile valley and areas with plentiful wildlife to hunt. With so little practical, first-hand evidence available, then, a perfect setting for a con; why, then, are scholars now discussing which of a number of candidates are most likely for the areas described? How could Joseph Smith possibly have hit the nail right on the head describing correct directions (even a route used by people in the area at the time), descriptions of specific places and even a correct place name of a burial place (Nahom).
“By describing in such precise detail a fertile Arabian coastal location, as well as the route to get there from Jerusalem (complete with directions and even a place-name en route), Joseph Smith put his prophetic credibility very much on the line. Could this young, untraveled farmer in rural New York somehow have known about a fertile site on the coast of Arabia? Could a map or some writing other than the Nephite record have been a source for him? The answer is a clear no. Long after the 1830 publication of the Book of Mormon, maps of Arabia continued to show the eastern coastline and interior as unknown, unexplored territory. In fact, until the advent of satellite mapping in recent decades, even quite modern maps have misplaced toponyms and ignored or distorted major features of the terrain.” [In the Footsteps of Lehi (p29) by Warren P. Aston and Michaela K. Aston (Salt Lake City, Utah: Deseret Book Comp., 1994)]
You mention Reformed Egyptian: another Common complaint against Joseph Smith’s claims. The fact is that there are known scripts that can very well be described as Reformed Egyptian: including forms called Demotic and Hieratic. Also well known is writing in one language but utilising characters of another in some way;
“We have, in fact, an ancient illustration that comes remarkably close to the Book of Mormon itself. Papyrus Amherst 63, a text from the second century B.C., seems to offer something very much like “reformed Egyptian.” It is a papyrus scroll that contains Aramaic texts written in a demotic Egyptian script. (Aramaic is a language closely related to Hebrew. of the Old Testament book of Daniel is written in Aramaic, and it was the spoken language of Jesus and his apostles.” [Daniel C. Peterson in Review of Books on the Book of Mormon, Vol. 5, 1993, pp. 43-45 (available online)].
Another common claim is that the Egyptians were old enemies of the Jews, therefore they would never use Egyptian language in any way. Clearly it is true now that the Jews do not use any form of Egyptian: but this is no surprise given that the language is now dead. However it can be easily seen that they have translated the Bible into the languages of their “historic enemies” the Arabs, Greeks and Aramaeans.
(
jefflindsay.com/BMEvidences.shtml#egyptian)