What kind of leisure?

Bonar on M'Cheyne's life:

... if compelled to take some rest from his too exhausting toils, his recreations were little else than a change of occupation, from one mode of glorifying God to another. His beautiful hymn, I am a debtor, was written in May 1837 at a leisure hour.
- Memoir, Bonar, p.81

I think this is a challenge for us Christians in our leisure/fun/entertainment driven world. I am tempted to think that taking rest means rest from God. Don't I realise that eternal rest is knowing and glorifying God? There won't be opportunity or desire to switch off from God and veg out!