This page gives some pointers on how to connect Google Calendar to your mobile device. The church's calendar is hosted on Google Calendar, so if you have Google Calendar setup on your mobile device, then you can see the church calendar there.
The first thing you want to do is to get the church calendar viewable on your Google Calendar. To do this go back to the church calendar and click on the + Google Calendar icon in the lower right. This will take you to your Google Calendar. You may need to login if you aren't already logged into your Google account. Once there you should see Minneapolis First SDA show up under Other Calendars. And the events from the church calendar should show up on your calendar. You can click on the box to the left of the calendar name to turn the events on or off in the web view.
If you have an Apple device (iPhone, iPod Touch, iPad) then you want to follow these instructions. You will want to follow the instructions for multiple calendars to get the church calendar to show up on your device in addition to your own Google Calendar.
If you have an Android device, then any calendar that you can see on the web as part of your Google Calendar is already available on your device. However you may need to change the settings in your mobile device's calendar to choose which calendars to display.
If you would like help getting this setup, see Jon Schewe at church.