Dave Armstrong has posted a series of "25 Short Arguments on the Difficulties of Perspicuity (Clearness of Scripture for Salvation)" (link) from his book "501 Biblical Arguments Against Sola Scriptura: Is the Bible the Only Infallible Authority?" I can see that his list of arguments has received nearly a thousand views, so perhaps it makes sense to provide a response to each of these. The arguments themselves are not long - individually they are no more than smudges that aim to obscure Scripture's clarity. This is number 4/25 of my wiping away of the smudges.
4. I think Scripture is pretty clear (I've always found it to be so in my many biblical studies), but I also know from simple observation and knowledge of Church history that it isn't clear enough to bring men to agreement.
The fact that the Scriptures don't bring all men to complete unanimity isn't really relevant to the issue of perspicuity.
In other words, the Scriptures are sufficiently clear to present the Gospel so that people can hear and believe. The fact that not all believe has nothing to do with the clarity of the message.
The Scriptures make Christ manifest, even if sinners refuse to accept what the Scriptures say:
Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began, but now is made manifest, and by the scriptures of the prophets, according to the commandment of the everlasting God, made known to all nations for the obedience of faith: to God only wise, be glory through Jesus Christ for ever. Amen.
Furthermore, there is no need for there to be complete unanimity on every teaching of Scripture. One of the joys of Scripture is that one cannot exhaust all of its treasures. The fact that, in the process of exploration, we are going to disagree with other Christians about some teaching or other is reasonable, especially since we are fallible human beings.