• needs must when the devil drives

• find one's own level

• do the level best

• do one's level best

• needs must when the devil rides

• level pegging

• talk of the devil

• give the devil his due

• level-headed

• between he devil and the deep blue sea

• the devil to pay

• play the devil's advocate

• for himself and devil take the hindmost

• on the level

• devil take the hindmost

• find one's won level