I am kind of going thru my own questions. Not doubts per se, but understanding. For example, look at how often Christ says give everything you own to the poor, and I don't see a lot of people doing that. Also, it talks about women shouldn't cut their hair, wear makeup and a lot of people don't follow that. So to me, there are things in the Bible that are really quite confusing and it seems people just pick and choose what they like.
I would agree with you that some people pick and choose what they want to go along with. However, I do not think that is a reason for God's Word to be thought of as foolishness. I think it is the fault of frail fallen human beings who try to run like Jonah from what they have been called to do.
I also think you have to be very careful with determining exactly what it is the Bible says.
The Bible does not say women should not cut their hair. It says that it is shameful for a woman who has her hair shaved off. Paul was not talking about a long haired woman getting a few inches cut off. He was talking about women who like prostitutes of the time, had their heads shaved. This passage itself was not even concerning whether or not a woman should cut her hair. It is about why a woman should have her head covered.
I am one of those who covers her head, I have been convicted by the Holy Spirit that I would be remiss if I did not take the passage seriously. However, I do not jump on others who have not been convicted to do the same. When we as Christians stand before the Lord, each of us will be called into account for our own behavior based on what we know or should have known.
We are instructed to give to the poor. The call to give all you have to the poor was made to someone who specifically had a problem with wealth which was keeping him from following Jesus. Some of Jesus's followers were wealthy. Zaccheus even told Jesus that he gave half of all his goods to the poor and returned fourfold in any situation he took from someone unjustly. But we have no record that he was ever asked to give all he had to the poor. However, I believe that if you have been convicted by the Holy Spirit to give all you have, then you should surely do it.
The Word of God is there for all of us to see, learn, and with the help of the Holy Spirit, to understand. With the Lord's help, I try to do what I understand to do (and believe me that is a lot easier said than done), and I pray that the Lord increases both my desire to obey and my understanding.
I believe Genesis 1 is very clear in what it states. God created the heavens and the earth in six days. It is the very beginning of belief and faith in what God has to say about us and the way we respond to His creation. If the world can deny its truth, then they can just as easily deny any other part of the Bible.