Sorry it's taken me a few days to respond onegod, but here now is the next parts of my answer to your question.
I think it's important to start by saying that, no, God didn't create man weak.. He created man in His own image. No other part of creation was created like that, not even the angels. Having free will does not equate to being weak. Free will means having the right to respond voluntarily to God, not because you are compelled to, but because you want to.
No one could call those who martyred for what they believe weak. No one could say that a woman who endures long hours of labour to produce a baby is weak. No one can say that anyone who endures the most painful and distressing treatments for cancer is weak. Weakness in all these cases refers to physical, spiritual and emotional weakness. God created mankind with an eternal soul that lives on after this human body dies.
That man chooses to rebel and turn against God is not a problem in the blue print of the creator God. On the contrary, it was part of the eternal plan to enable man to have the ability to turn against God, so that man's response to God was in free will. Man remains as guilty of his/her own rebellion as Satan does to his.
The test of life, is not how we endure the hardships that come our way, though that is part of our total response to God. God created mankind to live on this earth in relationship with Him. The whole purpose that Jesus came, was to reconcile man to God. To restore the broken relationship and the inability of man to ever reach up to God and see fellowship regained. Sin would forever be the break in the fellowship that would see man and God forever separated. God himself provided the bridge that reconnected man and God in fellowship.. Jesus Christ Himself. Without that bridge, and with out reconcilation between God and man, there can be no relationship with God.
Listen to God's words in Job 38 when Job and his friends were questioning God and all that had happened in Job's life. (Job had never denied God's right to allow these things, but he still had questions)
Then the Lord answered Job out of the storm. He said, "Who is this that darkens my counsel with words without knowledge? Brace yourself like a man, I will question you, and you shall answer me.
Where were you when I laid the earth's foundation? Tell me if you understand....... "
read chapters 38-41 goes into a beautiful description of the soverignity of God which I think we would all agree on, then please read 43:1-6 and read Job's response to the soverignity of God .. which should be our response as well
" Then Job replied to the Lord, I know that you can do all things, no plan of yours is thwarted. You asked "who is this that obscures my counsel without knowledge?" Surely I spoke of things I did not understand, things to wonderful for me to know.
You said "listen now, and I will speak: I will question you and you will answer me. My ears have heard of you, but now my eyes have seen you, therefore I despise myself and repent in dust and ashes."
Read the reaction of Isaiah when he comes face to face with God in Isaiah 6. Read the reaction of Jeremiah in Jeremiah chapter one. Or of David in Psalm 51 or of Adam and Eve in Genesis 3.
You cannot come into the presence of God without being overwhelmed by His holiness and your unworthiness and the realisation that you need something more than yourself to make you worthy of God's presence. If there is any weakness in us, it's in our total inability to make ourselves acceptable before God, so God took all those weaknesses upon Himself and provided the only acceptable response to our sins...He took our sins and weaknesses upon Himself and paid the penalty that He himself demanded for sin and rebellion.
You asked about the difference between faith and works, and what is love?
Faith says "God alone can do all these things, and throws our dependence on Him for everything .. our life and our eternal life. Works says, I can do this myself .. if I work hard enough I'll make it. God will see my attempts and be happy with them. God says, that even our good deeds are like filthy rags, we can do nothing to provide for our own salvation. Love says "whilst we were still sinners Christ died for us" "God so loved the world He gave His only son that whoever believes in Him should not perish but have eternal life. "
Works is our attempt to please God, but we can never satisfy the requirements for the treatment of sin. Love says that God so loved mankind, that not only did he create man with the capacity to respond to him voluntarily but he also provided the answer for the inevitable rebellion and resulting sin. Faith is man's response to God's love.. and it's only by faith can we please God
Ephesians 2:8-9
"For it's by grace you have been saved, through faith, and not of yourselves, it is the gift of God, not by works so that no man can boast."
Hebrews 11:1
"Now faith is being sure of what we hope for and certain of what we do not see."