“Put on all the armour that God gives you, so that you will be able to stand up against the Devil’s evil tricks”. 
Eph 6:11 GNB 
Someone once said that the Devil’s greatest trick is to persuade you that he doesn’t exist! Some Christians find it difficult to believe in a devil, others accept it without query. Asked if he believed in the Devil a young candidate for the ministry answered, “Yes, sir”. The examiner probed further, asking, “Well, why do you believe that?” “Because he’s always at me sir”. End of exam!
The powers of evil are powerful, as we have said. They are also very evil. But thirdly, they are very clever and cunning. In this verse Paul uses the singular word “Devil” to prepare the Ephesian Christians for the huge problem that faces them in the form of temptation. And it was all around them in Ephesus, the city that made an industry out of sex! “It is because the Devil seldom attacks openly, preferring darkness to light, that when he transforms himself into ‘an angel of light’ we are caught unsuspecting. He is a dangerous wolf, but enters Christ’s flock in the disguise of a sheep. Sometimes he roars like a lion, but more often is as subtle as a serpent. We must not imagine, therefore, that open persecution and open temptation to sin are his only or even his commonest weapons; he prefers to seduce us into compromise and deceive us into error” (J. Stott, The Message of Ephesians, p265).

Do not therefore be too self-confident by assuming that you are clever enough to withstand “the Devil’s evil tricks”. Beware of the formidable enemy you are up against and seek Christ’s help in your conflict.

PRAYER THOUGHT Lord, be with me when I face the foe.