If you want to add in your Google Analytics code into your website then this theme has a special field for the same purpose. Move to your WP Dashboard => Native Church => Theme Options => General and paste your analytics code in this field:

You should not add script tags in the code  <script>Analytics Code</script>

Though the theme has it’s own field for the analytics code but we recommend using this plugin As code remains on the website even after you switch your theme.