well is'nt that convenient, so only the good stuff is atributed to god then, and all the bad stuff, including creating evil, must be some other omni-max god.
has he got an evil twin.
Not, not even the good stuff is necessarily attributed to God. The prevalent Jewish mindset in the OT (and possibly still today) was that if you were wealthy, in good health, had a large family, and just general good fortune, it is because God had blessed you with it. If you were poor, sick, barren, and/or just generally fortuneless, it is because God had cursed you. The reason God would bless or curse you always had to do with faithfullness, or infidelity. Thus, the authors of the Old Testament imbued their literature with this kind of thinking. All evil things that happened to the Jews, or to others (sometimes by the Jews) happened because God had cursed them (or in the case of Jews doing evil to others, God commanded them to do so to be the workers of His will on earth) for unfaithfulness to the Covenant He had made with them. Good fortune was always attributed to God on account of faithfulness to that Covenant.
We understand that this mindset was prevalent during the time that these books were written, but recognize that only the underlying theme of the mindset was true (ie, God blesses those who are faithful to Him, and punishes those who do not), but that this theme does not always play out in terms of physical blessings or curses. In other words, a wicked man may still be wealthy, and in good health, and sire many children, and a good man may be poor, sick and unfortunate. In our understanding, this is because now we understand God's blessings/punishments as being spiritual, rather than physical.
Thus, when we read those passages, we don't read it at face value, but take from it the idea that if we go against the will of God, and even against our own natures which are the product of the mind and will of God, then we will be unhappy, and that if we are faithful to God, faithful to truth, then we will be happy, and this is the truer reality of God's blessing.
It isn't about convenience, it's about scholarship. It's important to understand the mind that writes in order to understand why what is written was written.
So, for example, let us imagine that the flood mentioned in Genesis did happen. The author of Genesis says that the reason the earth was flooded is because humans were exceedingly
sinful (unfaithful to God), and so God punished mankind. However, what may actually have happened was that there was a natural disaster (or even a disaster that was caused by human actions) which destroyed the great majority of human and animal life (a global flood, in this hypothesis), and that after all was said and done, in retrospect and reflection, the prevailing mindset of "Misfortune is a curse from God for sin" attributed the catastrophy to being an action of God against man for man's sinfulness.
The Catholic Church addresses this merely by saying that these kinds of things that are recorded in the OT are inconsistent both with the God as revealed in the NT and with a strictly logical theology (as dealing with the nature of God), and that we can account for this inconsistency by looking to the human authors of the OT books, and the over-riding mindset of their culture.