Is it wrong to question what your church teaches & why did Jesus come from God ,I was told Jesus is God?

You should always compare what a church teaches with what the Bible teaches and if they match. You may have to apply yourself and study a bit but honest people will always welcome questions and any teaching must stand up to what is in the scriptures. Make sure you study from the Bible and not from what other people say the Bible says, though. Bible lexicons and other dictionaries can be very helpful and are usually pretty unbiased - but be careful with commentaries because this is not always the case with them. Just because someone tells you something doesn't make it so - see what the Bible actually says.