just one day perform some form of miracle in front of the entire earth in which he proves he exists???
Wouldn't this be the most loving and sensible thing to do? For instance, this coming Thursday God repeatedly strikes Mount Kilamanjaro to the point that it reads in Hebrew, "God Exists, I just did this. Tomorrow I will make make it rain manna in Miami Florida for precisely 3 minutes as proof that I am all powerful and exist and everyone should serve me. P.S. my name is also Yahweh, Thanks and see you all tomorrow"
Why would this be so hard. No doubt such a display would take no time at all and would require far less effort than all the coming plagues and destruction of the earth and governments and pestilences and diseases etc... theere would also be an easy way to weed out the true bad people because anyone who would ignore such a gesture obviously would not care about trying to please god.
After all he "apparently" did these things for thousands of years anyway and spoke to people and made tablets etc...
Just do it one more time, we have cameras and cellphones it would be indisputable.