Assalamu alaikum.
We muslims believe that Allah can do everything. Some athiests asks that, Can Allah create a stone that allah can't lift?. I will say YES Allah can, although Allah can do whatever he wills.
But when i listen to SOME world famous islamic preachers they are answering this question as Allah never said that he can do everything in the Quran. But the verses ( for eg: mulk: verse1) mean Allah has power over all things, not Allah can do everything (although some translators translated so). And they then say that Allah also said Allah is capable of whatever he wills ( means he never wills ungodly things like being a man, or saying lies etc... )... Actually they are saying that we dont say that allah can do everything but say allah has power over all the things. What is ur opinion on that?....
