Not one Scripture quoted. We can discuss if you post Scripture.
Omniscience
1. Scope of Topic:
The attribute of omniscience, knowing all things, is an extremely broad topic covering many categories of knowledge, and because of this it's a huge task to make a comprehensive study of it. On virtually even page of scripture God is teaching on the breadth of his knowledge, either explicitly or implicitly.
2. Brevity:
For brevity I'll just share a few quick thoughts, followed by some lectures and sermons on the topic by well-known theologians.
Anyone here can go over the sermons and lectures at their leisure.
3. History:
Historically, the understanding of God's omniscience is ancient, broad, and well attested.
This view of God's knowledge was known in ancient Israel, and has been passed forward all the way into the modern era.
Judaism:
In modern Orthodox Judaism, and stretching back into antiquity, the Jews have always believed God is omniscient. They affirm he has perfect knowledge of all things, that he knows all things future, and that he cannot learn anything new because all things are already known by him.
Christianity:
Omniscience has always been understood and affirmed by the Christian church, and we have records of this going back to the early church fathers and the early church councils. All groups within orthodoxy have always affirmed God's complete omniscience and foreknowledge.
Calvinism & Arminianism:
Both Calvinism and Arminianism are completely unified in holding to this view. Both theological camps have always affirmed God's omniscience and foreknowledge; they have never disagreed on this. They have only disagreed on the ramifications of this foreknowledge, and whether or not it is antithetical to man's free will; but they have never disagreed on the existence of God's perfect foreknowledge.
There may be small heterodox camps within Christendom which disagree, but the orthodox view has ALWAYS been that God has perfect omniscience and foreknowledge.
4. Video Sermons and Lectures:
The following videos are all by orthodox and well-known pastors and teachers.
The first video, by William Lane Craig, is a bit long, but you only need to watch it from 11:00-29:00... a total of 18 minutes.
I recommend starting with him, and watching those middle 18 minutes.
He may seem a bit boring, but he has doctorates in both Theology and Philosophy, and he primarily works in academic apologetics... he's not the most exciting guy but his material is very organized.
Heads up: after 29:00, Dr. Craig gets off into some arcane philosphical issues that most people would probably prefer to skip... so it's a good place to end.
William Lane Craig - watch 11:00-29:00
Sinclair Ferguson
Steve Lawson
A.W. Tozer