*ahum*
http://biblehub.com/exodus/9-12.htm
= your god,
hardening the heart of pharao, making
sure that he will not listen to or believe the words and miracles of Moses. If that isn't messing around with someone's free will - then I don't know what is.
Pharaoh had hardened his own heart by not willingly letting God's people go. God had given him many chances to listen and let them go. God being omniscient already knew Pharaoh would not listen and this knowledge is independent of Pharaoh's free will. God is not obligated to continue to give Pharaoh chances to listen, eventually God will give him over to the desires of Pharaoh's own heart.
God will give man many chances to listen, but if they don't listen God is not obligated to continue trying to get them to listen, eventually he does pull his spirit away completely and in doing so, gives them over to the powers of evil, which is what a man really wants, when they are so unwilling to listen to God.
Also, a "perfectly just" being is not in the business of mercy and forgiveness.
But if there is a perfect righteousness to adhere to and you honestly want to adhere to it, shouldn't you be forgiven of your wrong doing by showing a honest, humble desire to be righteous? Or does honesty mean nothing in this world?
If someone murders some else, should they never be forgiven even if they insist that they have a honest change of heart and will never do it again? It would take something omniscient to be able to peer into a man's heart and see if they are truly honestly and humbly sorry for what they've done.
Mercy and forgiveness is the suspension of justice.
True mercy and forgiveness is impossible for finite man to do because we cannot peer into the heart of others and see if they are truly sorry for what they've done. Sure a man can say they are sorry, but they might not be sincere. Only an omniscient being could actually see what's in the heart of a man and would be the only being capable of truly forgiving them if the man is truly sorry.
A "perfecly just" being would not reward gullibility while punishing rational thinking.
Where has God punished rational thinking?
A "perfecly just" being would not punish a scapegoat for the crimes of others.
What scapegoat are you referring to? Jesus is God. This would be like you willing sacrificing yourself for someone you love to have life. Again, only an omniscient God who can peer into the hearts of men is capable of truly forgiving man entirely, if they honestly want the forgiveness..
A "perfecly just" being would not consider off spring to carry the guilt of the crimes of ancestors.
If the ancestors never sought forgiveness from the only God that can grant it, why shouldn't their transgressions carry down into their offspring? If the offspring seek forgiveness, God may grant it, since the ancestors never did.
A "perfecly just" being would, in his judgement, not put more importance on what you believed instead of how you behaved.
This belief goes to the core of man, it's not merely a choice, it's a deep desire for truth that can't be found anywhere else. After this truth is found, you're behavior is continually being improved through the power of God who is perfectly righteous.
The god of the bible is the very opposite of "perfectly just".
And christianity as a whole is a testament to that fact.
Is it? Maybe, you haven't considering everything about the God of the Bible or Christianity yet. There could be information that you're missing.