Well, as an example, I know that the prayers of my parents...and their church family worked for me because I would have been the LAST person one would think would become a believer in Jesus Christ. No doubt in my mind I'd not be living today considering the activities I was involved in.
At any rate, I highly doubt that I'm going to convince you...or anyone else in here....on a message board of how the power of God can be unleashed thru prayer. I'll just leave it at that. I know that I know that I know it works...and I'm good with that. I'll continue to pray for others, things, and my my wife and myself, and watch the results. Do my prayers ALWAYS get answered the way I'd like? No. But, invariably, I look back and thank God that they didn't. There's at least one thing I do know for certain: God always knows best...and I'm entirely good/grateful with that.
BTW, it doesn't matter a whit that Lincoln's call was in 1863. Precedent is precedent. Just ask our court system. They'll go back to the end of time to find basis. Obviously, Lincoln was one of our greatest presidents. I'm not throwing out what he says with the bathwater.