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).
As Necho, king of Egypt, was on his way to fight against Carchemish, king Josiah of Judah came out against him for battle. Necho assured Josiah that the battle did not involve Judah and that the Lord had commanded him to make haste against the house of Carchemish. In order to turn Josiah’s intervention, Necho reminded Josiah that his intervention would be meddling with the will of God. Josiah refused to listen to the warning and meddled in these matters costing him his life (2 Chronicles 35:22-24). Gamaliel, a doctor of the law, expressed a similar statement when he told his peers that they should let the apostles alone lest they fight against God (Acts 5:34-39).