Hello Steve,
Welcome to the site. I see that you are a minister. There is a scripture about the wind that says something about "whither it goes no man can tell".
With that as the basis for my comments, I'll try to help.
The wind shifts constantly and there is nothing you can do about it. Set up as best you can and if the wind shifts the wrong way, it is sometimes best to back out and come back another day when the wind is better, rather than mess up a good spot and educate the deer.
In addition to normal breezes that we deal with, you also have to think about thermals. USUALLY, thermals rise in the morning and fall in the afternoon. This has to do with the earth warming in the morning and cooling in the afternoon. Try to hunt ridges in the mornings and lower ground in the afternoon.
The best defense is to always stay as clean and scent free as possible. Use scent free soap and laundry detergent. Be conscious about smells. Don't fill your car with gas on the way to a hunt, or do anything that might add odor to yorself. If you can smell it, there should be no doubt that deer can.
Tree stands are great for getting your scent above the deer, especially in the morning when the thermals are rising. Sometimes the deer will still smell you, and you need to be aware of that. I've been in a tree stand and had deer downwind scent me from a hundred yards away as the wind carries my scent down to them.
Get G. Fred Asbell's book on stalking and ground hunting (I can't remember the exact title, but it's a great resource). There is a lot of information in there about scent control and management. You can get it from most libraries through the interlibrary loan program if you don't want to buy it. He ties a string onto the end of his bows to monitor the wind and relates a story of holding his bow horizontal and seeing one string blowing directly away from him when the other was blowing directly behind.
You can't control the wind. You have to learn to work with it.