Often, one will hear from proponents of the Hypostatic Union that, as impossible and seemingly illogical it is, "with God, all things are possible" is a meaningful response to overcome the inanity of the doctrine.
Dave Burke, a leading Christadelphian apologist, in a comment on a blog post, made the following comment which highlights the problems with some standard Trinitarian comments in favour of this pivotal doctrine of Trinitarianism:
[S]imply saying “God can do everything” doesn’t solve anything. I’ve seen it used by Trinitarians time and time again as an emergency theological stopgap, or a catch-all response to questions Trinitarianism cannot answer. But it results in total absurdity. For proof of this, please read on and try not to be offended.
I’ve just decided that God the Father is a cabbage. He is also Jesus, but His “cabbageness” is the most important aspect. Wait, what’s that you just said? God didn’t claim to be a cabbage? And Jesus didn’t claim to be one either? OK sure, he might not have said so, but that doesn’t prove he isn’t one. Perhaps people didn’t see a cabbage when they looked at him, but this is easily explained by the fact that he would not wish to alarm them by appearing as a talking cabbage. Surely you agree God could be a cabbage? After all, with Him all things are possible!
Oh, and before I forget: God is also a mango. An evil mango who murdered the Holy Spirit. Got a problem, with that? There’s no problem as long as you understand that with God all things are possible. Wash, rinse, repeat.
I’ll leave you with this: how would you respond if I countered every Trinitarian objection to Biblical Unitarianism with the phrase “With God all things are possible”?
I have discussed the Trinity and Christology numerous times on this blog; see my lengthy post, “Latter-day Saints have chosen the True, Biblical Jesus” which delves into the hypostatic union and related issues.