When building a website there's a huge cost vs adaptability question to be asked. If budgets are really tight, there are some great entry-level website builder solutions out there which are even better when built by an experienced hand.
But when the budget allows, nothing beats a bespoke website built in a modern CMS like Craft CMS. In an expert designer/developer's hands a bespoke website can not only be much simpler to use but also way more sophisticated.
The beauty of Craft CMS is that it's so adaptable. This website includes many cool features including a bespoke integration of a ChurchSuite feed and a super-cool sermon engine with an enormous amount of logic behind.
The site is available here.