"And he that overcometh, and keepeth My works unto the end, to him will I give power over the nations" (Revelation 2:26).
The Remnant is not a closed group. I heard someone say this many years ago: anyone can, everyone won't, but somebody will. That is the gist of it, you see. There is a whole doctrine called Remnant Theology, but that is not what we have in mind here at all. Let us be clear: a Remnant is not an exclusive, elitist circle of super-spiritual saints. Not at all. The promises are made to the "whosoevers".
Anyone can be a friend of God! Anyone can overcome! But we know that everyone will not. Why won't they? I wish I knew why, I wish I could explain it, but I cannot explain it, and I just know it is a fact that everyone will not go on with God. We know it from history, we know it from looking around us right now. Everyone is not going to press into God, everyone is not going to seek His Kingdom, everyone is not going to lay down their life and follow Jesus. Not that they CANNOT, but they WILL NOT. There is nothing set in stone that says you are destined to be an overcomer, but these other people are not. No, everyone is destined for it, but how many will actually go after it? Anyone can, everyone won't (in fact, a large majority will not), but SOMEBODY will. That group of "somebodys" who will is the Remnant.