1 Samuel 8:9
"Now therefore hearken unto their voice: howbeit yet protest solemnly unto them, and shew them the manner of the king that shall reign over them."
Samuel's sons had soured the children of Israel from wanting another priest to rule over them. They saw how the other countries had a king over them, and they thought that it would be better for them to have a king. When they went to Samuel and demanded a king, he was upset with their request, but by the command of God he agreed.
God's agreement with these people certainly didn't mean that He agreed with what was going to be done. God told Samuel in verse 7, "Hearken unto the voice of the people in all that they say unto thee: for they have not rejected thee, but they have rejected me, that I should not reign over them." God then told Samuel to tell them what a king would take from them and demand of them. God agreeing with the children of Israel did not mean that He was in agreement with what was going to be done.
There are times when God will agree to let us do something even though He is not in agreement with it. He agrees because He knows that we are going to do what we want to do no matter what. For instance, God agreed with Balaam to go with Balak even though He was not in agreement. God had already told Balaam not to go, but He agreed because he was persistent. God was not in agreement with Samson's lifestyle, but He agreed so that the works that were supposed to be done would be accomplished. Just because God has agreed to let you do something does not mean that He is in agreement.
Friend, when God has already told you not to do something, then don't expect Him to change His mind about what He wants you to do. Yes, God may agree and let you do it, but that doesn't mean He is in agreement with our actions. God gives you a free choice to do what you want to do, but you don't need to ask God if you can do something when you already know what He wants you to do. You may push God to the point where He agrees to let you do something, but He is not in agreement with what you are doing.
Moreover, just because you see blessings while you're doing that which God agreed to do not always mean that He is in agreement. For instance, just because you see people getting saved when you have compromised the truth does not mean that God is in agreement with how you did it. God's Word being preached will do It's work whether or not you preached His Word while doing right. There are times when God's blessings are a result of something other than what we are doing.
It simply comes down to this, are you doing God's perfect will for your life? Romans 12:2 says, "And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God." God may agree with you doing His good or acceptable will, but His agreement comes when you are doing His perfect will.
Let me ask you, is God in agreement with what you are doing in your life or has He simply agreed to let you do it? Don't push God into agreeing. Your ultimate desire should be to do what God not only agreed to let you do, but what He is also in agreement with. This is where you will find the greatest blessings of God upon your life.