If your church is on Twitter, Facebook, or Instagram, you are likely always looking for content. Sermon quotes are a great way to keep the message fresh for people who were in church on Sunday or encourage those who missed it to listen or read it online.
Sometimes preachers are willing to pull out quotes of what they thought was important. This is also an excellent role for a volunteer. Look for the people who take notes during the sermon. They probably have them ready to go as soon as worship is over. You can post these quotes as plain text on Facebook or Twitter.
But, for more impact, make them into a graphic. Using a free web app called Pablo (https://pablo.buffer.com/) you can create beautiful images with overlaid text. Pablo will even help you get the image sizes right for posting on Facebook, Twitter, and Instagram.