You can embed videos in your post or page content. Here is an example from YouTube. Many other popular sites are supported. You can even upload your own video to WordPress. The theme makes the videos responsive so they show nicely on mobile devices.
In principio creavit Deus caelum et terram. Sic enim dilexit Deus mundum ut Filium suum unigenitum daret ut omnis qui credit in eum non pereat sed habeat vitam aeternam.