Here we see how the others without Mary enter in: ‘and [they] found not the body of the Lord Jesus.’ Having entered the sepulchre, there appear to them two men, who John’s Gospel tells us were angels (John 20:12).
This is the trouble with all of us. We don't readily grasp spiritual things, because however brilliant we may imagine we are, however well-endowed intellectually, our horizons are so low. Our view is so limited to earthly things that it's very hard for us to understand spiritual things. So it was with the disciples, even though they had been in his school for nearly three years.
What is the general notion of what Christianity is about? What do people generally imagine? They immediately assume that Christianity must be for our benefit, physically or materially. It must be intended by God as some means of influencing the world and making it a better place. It must be intended to bring about an improvement in man's political circumstances and his prosperity. That is the automatic assumption of everyone, that Christianity is about that. Well, of course we make no secret of the fact that there has always been a side effect of Christianity to improve things. In all periods of history, when large numbers of people have been converted to the Lord, then as a byproduct of those periods of what we may call spiritual prosperity, there have always been many people who have been reformers and improvers of society. But however great that influence may be, it is actually a side effect. People are surprised when we explain what true Christianity is.