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).
Meditation can be a godly practice, but can also express the exact opposite connotation. Nonbelievers go to great lengths to push their concept of meditation upon the world, but their meditation remains ungodly in every aspect. Rather than asking whether or not we should meditate, we should ask upon what we should meditate. Perhaps the Christian’s most important question in this matter should be, “Is my meditation pleasing to the Lord?” Interestingly, David, a man after God’s own heart (Acts 13:22), prayed, “Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O LORD” (Psalm 19:14). David wanted to insure that his meditation was acceptable to the Lord.