"What is wrong about israel and its current territory?"
Nothing. And what makes you think something is wrong?
"didnt the bible say they were there first please explain "
Not only the Bible says it. The archaeological excavations say the same.
"what are they doing wrong"
The main mistake of the Jews was not to throw Arabs out in 1948 and 1967, when Arabs attacked Israel and nobody would say a word if Israel kicked them all out. Jews were too generous, soft and kind and they let a quite a big number of Arabs stay on hte land of the Jews even after Arabs attacked them - and lost. Then Jews, again out of stupidity and false "generosity", let the Organization of Liberation of Palestine of Yaser Arafat move from Tunisia to Gaza, Judea and Samaria. Arabs procreated like flies in the developed by the Jews Israel and Judea, and in just 60 years the population of these "genocided, murdered, assassinated, starved" Palestinian Arabs grew from hardly 200,000 to almost 3, 000,000 people. i leave to you the answer about how can
" a genocided population" grow 15 times in just 60 years.
"why are they so powerfull"
Let´s stop the stupidities about the "how powerful the Jews are". Israeli Army is pretty strong - but it is not as strong as the Chinese, American or even Russian Army. Israeli economy is doing well - but Israel is not an economic giant like the USA or Japan or Germany. Israel is a regional power number one in the Middle East. That is all