Why things seem easy

The reason why some things seem easy to us is because it's as if it's natural to our bodies to perform whatever the task may be. One person might find jogging to be easy because they're physically fit and have the mental capacity to strain themselves. Others might find it easy to solve complicated mathematical problems because they've spent years developing their intellectual capacities to the point where things that are impossible for normal minds to figure out, are possible to analyze and understand. Similarly, if we spend years devoting to serving Jesus, then it will be natural for us to do whatever he asks. That's the reason why overall it is easy, even though at times it's in fact difficult for the common person.