"We believe in the plenary inspiration of the Holy Scriptures, by which we understand the 66 books of the Old and New Testaments, given by divine inspiration, inerrantly revealing the will of God concerning us in all things necessary to our salvation, so that whatever is not contained therein is not to be enjoined as an article of faith."
This basically means that while we believe that entirety of the Old and New Testaments are the inspired word of God, that inspiration was interpreted by human beings, and as such is possibly subject to some degree of fallibility, except in the matter of salvation. So, to make a long statement short: If it will save your soul, then it's infallible. Otherwise, it need not be necessarily 100% accurate.
Mr. McDonald (the writer of this letter) believes that this position on scripture is not strong enough, and that scripture (supported in his letter by quoting scripture) is entirely infallible. After all, "God is perfect in all His works, in regards to anything. He did not even allow a man's interpretation, will, or opinion to enter His Word."
As a solution to the problem of our scriptural heresy, MacDonald offers this as alternative to our current doctrine: "Scripture, being found as eternally inerrent and inspired of God, is veracious and authoritative concerning every aspect of physical and spiritual existence. The Bible has been provided as our only completely truthful standard of theology, ethics, science, history, and every other realm into which its limitless grasp extends."
"O Daughter of Babylon, doomed to destruction, happy is he who repays you for what you have done to us—he who seizes your infants and dashes them against the rocks." (Psalm 137:8-9)
"When Israel had finished killing all the men of Ai in the fields and in the desert where they had chased them, and when every one of them had been put to the sword, all the Israelites returned to Ai and killed those who were in it." (Joshua 8:24)
"While the Israelites were in the desert, a man was found gathering wood on the Sabbath day. Those who found him gathering wood brought him to Moses and Aaron and the whole assembly, and they kept him in custody, because it was not clear what should be done to him. Then the LORD said to Moses, "The man must die. The whole assembly must stone him outside the camp." So the assembly took him outside the camp and stoned him to death, as the LORD commanded Moses." (Numbers 15:32-36)
"He set the earth on its foundations; it can never be moved." (Psalm 104:5)
"Have you entered the storehouses of the snow or seen the storehouses of the hail, which I reserve for times of trouble, for days of war and battle?" (Job 38:22-23)
"What is the way to the place where the lightning is dispersed, or the place where the east winds are scattered over the earth?" (Job 38:24)
"Do you send the lightning bolts on their way? Do they report to you, 'Here we are'?" (Job 38:35)
So, I leave the choice to you, dear reader, as to whether you want to be believe that scripture might be wrong in the areas of science, and that the bloodlust of the Israelites may have occasionally taken things too far, or whether you want to believe that God condones baby crushing, snow is kept in storehouses in the sky, the earth has a foundation, and God talks to lightning bolts. Your choice.
“The Promised Land always lies on the other side of a wilderness.”