You can use the Bible to say whatever you want it to say. This guy has his opinion on what it all means and others have their opinion and there are so many different opinions that it leaves a person confused.
The teaching from your pastor tells you one thing, and you accept that as truth without confirming it in Scripture, while rejecting the consideration of anything that doesn't agree with him. That's not wise. Even Paul's preaching was compared against Scripture by the Bereans in Acts 17:11, and they were commended for it.
The only thing left to do is obey what God puts on your heart, but you must be a saved person to even know what Gods will for you. So it becomes something between you and God, and nobody else should know how much you give.
While I agree that giving should be done in secret, there are still two problems with these statements. First, you have made several unfounded accusations regarding others and how they give (or in your opinion, how they don't give) without knowing how much they give or how much they make. So you are in error. Second, if you don't know the Scripture and you are following "what God puts on your heart", it is very likely that you will be deceived. God gave us His word to be our standard and guide, so if the guidance on your heart doesn't line up with the full counsel of Scripture, you should not follow it.
I personally believe tithing is just a basic standard, we should give more than just 10% since God gave us everything we have we should give back generously to Him. I don't like folks here saying that my money is going to my pastor, that's false. My money goes to the Lord and the Lord gives some to my pastor so he can live a decent life.
You can believe what you like, but it doesn't stand up to scrutiny. I do agree that financial contributions go to the Lord, but I start to wonder where the pastor's heart is if he's not preaching sound doctrine.
The pastor is appointed by God to shepherd us sheep, he knows Gods word better than all of these sheep here who are self appointed authorities on the Bible. God only reveal the truth of the Bible to certain people and He deliberately confuses others who think they are smart.
You have no idea just how smart others are until you interact with them extensively. Disagreeing with you doesn't make anyone "not smart". Disagreeing with your pastor's view on tithing doesn't either. You seem to have put your pastor on a pedestal; that's idolatry. I'm sure he's reasonably intelligent, but he can still be wrong.
You're overlooking one important point: God confounds the wise... of the world, not of His kingdom! He makes His servants wise. Most of those here who disagree with you are Christians, not the unsaved.
Our pastor encourages all of us to study our Bible to make sure that what he preaches is exactly what the Bible says.
So do it, and don't be satisfied that the verses he quotes are actually in the Bible. That's only the first step. You need to consider the main principles of Scripture, like there being two distinct covenants; one of faith and one of law. You're trying to walk the Christian life with one foot in each.
But at the end of the day, we are the sheep and He is the shepherd, that's the way God has ordained the NT Church. We need to be careful of people who make themselves some kind of authority on scripture, God only gives that privileged to those who serve as shepherds.
That is not supported by Scripture... at all. A great many people who have spent their lives studying the Word are not "shepherds". Nobody here is claiming to be an authority on Scripture; we're just telling you that your position is wrong. It doesn't take an authority to do that.
Satan and His Demons know the scriptures better than anyone here, but it does them no good. It actually brings them more damnation, just as it does to those who know the Bible yet are not true people of God.
Your veiled condemnation of those who disagree with you is inconsistent with your claim to be a Christian.