The average believer would never consider the word joy to be an appropriate descriptive term for temptations. There is a great explanation for this as the average believer experiences little to no victory when tempted. Temptations put a man’s faith on trial. When his faith stands the test, he learns patience. Therefore, he sees temptation as a means by which he can grow in the Lord and add virtues such as patience. It is not that he finds joy in the temptation itself, but that God can and will use that temptation to make him "perfect and entire, wanting nothing" (James 1:4). Believers who fight through and obtain victory find joy in knowing that their faith pleases God (Hebrews 11:6).
Discerning the difference between the workings of God and the mischief of Satan sometimes serves as a difficult task for believers. Although the Devil is called the tempter in Matthew 4:3 and 1 Thessalonians 3:5, the Bible also shows that God uses temptation to try a man (Genesis 22:1). Other than the association to instigating temptation, God and Satan have no other common ground in this matter. The Devil’s motive and method of temptation is simply wicked. On the other hand, the Lord tempts only for the sake of trying one’s faith to bring about a righteous outcome. Do not discount the fact that God never tempted anyone with evil (James 1:13).
Today's passage tells the story of Jesus entering the synagogue. He immediately noticed a man with a withered hand. This man's physical infirmity moved Christ to compassion. Unfortunately, the religious leaders were simply calloused toward the man's predicament. The Pharisees watched Jesus closely, not because they were pleased with His gracious act, but because they sought opportunity to accuse the Lord for breaking their man-made rules. As the Lord observed the crowd, the Pharisees’ hardened hearts grieved the Lord to the point of anger. Of course, the Lord knew their thoughts and first sought to reason with them. He did the very thing which the Pharisees hoped He would. The hearts of the religious leaders that should have been tender and welcoming to God's miracles were instead full of pride and completely calloused. Christ's acts of compassion served to further harden their deceitful hearts rather than softening them.