Dear Trump, your call to allow all churches to reopen was dangerous. Sincerely, two evangelicals.

Earlier this year, many pastors received inadequate information on when to close their doors, and some faced deadly consequences. Your announcement makes decisions harder for church leaders by complicating clear public health messaging that caution during reopening is key.

Of course we want to go back to church. Some pastors who began opening in certain states have been preparing for several weeks for how to open safely and in consultation with their local public health officials. But an announcement on Friday does not give pastors adequate time to take the...