“Every sermon, every Sunday school lesson, every small group discussion is the equivalent of a ‘spiritual meal’. There is just as much variety offered to us in ‘spiritual meals’ as there are ‘physical meals’. Some are healthy, some are junky, some will make you fat, some will fuel profound spiritual growth while others will kill you.
When Jesus restored Peter after Peter had denied him three times, Jesus asked him “Simon Son of John, do you love me?�? Peter, wounded by the question answered, ‘You know that I love you.�? Jesus then gave Peter this command, “Feed my sheep.�? (John 21:15-18)”
The link provides an interesting chart comparing sermon “meals”