The Lord permits no rivals. In Isaiah 43:11, He said, “I, even I, am the LORD; and beside me there is no saviour.” Yet, there is a battle on the horizon that will bring all matters to a head. The Antichrist will sit in the temple of God claiming to be God (2 Thessalonians 2:4). He will torture the people of God (the Jews) and blaspheme the name of God. He will set up his image and demand that the people worship him (Revelation 13:14-15). This peak of idolatry and blasphemy will lead to the culmination of God’s jealousy when He returns to judge the world (Revelation chapter 19).
The Bible consistently identifies the Lord as a jealous God. As the Creator, He deserves man’s undivided allegiance. As the most High God, He is worthy of man’s unadulterated worship. It is often in this vein that the Bible speaks of God’s jealousy. He warned Israel not to make or bow down to any graven images (Exodus 20:4-5; Deuteronomy 5:8-9; Psalm 78:58) because He was a jealous God and would have no choice but to judge such infidelity. The same was true of any false god (Deuteronomy 32:16) or sin (1 Kings 14:22) which man allowed to come between him and his Creator. God is perfectly just in His jealousy since man was created for God’s pleasure (Revelation 4:11).
Historically, the word jealous is connected to the word zeal rather than to envy. Unfortunately, the world has perverted man’s understanding of jealousy by likening it to a detestable sin. The Bible student recognizes that jealousy cannot always be sinful because God says that He is a jealous God (Nahum 1:2) and God does not sin. A scriptural study proves that jealousy can be righteous, or it can be wicked depending upon the intent of the one in whom this jealousy originates. In a very basic sense, jealousy is the unwillingness to share or allow anything to rival the object of one’s desire. Since man has sinful desires, jealously is often viewed as sinful and can lead to other sinful practices. In the Lord’s case, His righteous desire to be man’s only true and living God drives Him to just judgment and godly jealousy.
Most Christians would consider biblical fasting a very unpleasant undertaking. Considering the complexities of the affliction offered by fasting might better help to understand its value. In our passage, the people of God determined to fast so that they might afflict themselves before the Lord. Several other passages discuss this affliction in even more detail. Isaiah 58:3 and 5 describes the affliction as not merely an affliction of the flesh, but also an affliction of the soul. Additionally, we learn that fasting humbles (Psalm 35:13) and chastens (Psalm 69:10) the soul. Fasting involves much more than merely opposition to one’s flesh. Fasting directly afflicts, chastens, and humbles the soul. Perhaps this is why it is so difficult to fast and so beneficial to do so.
Fasting, similar to other actions in life, has specific purposes and appointed times. The Bible offers various reasons why people might fast: an immediate need in prayer (2 Samuel 12:16), a need to loosen the bands of wickedness or undo heavy burdens (Isaiah 58:6), during times of elevated conflict or duty in service (Matthew 17:21; Acts 13:3), as a symbol of mourning (2 Samuel 1:12), and as an outward manifestation of true repentance (Jonah 3:5). This list is not exhaustive, but simply demonstrates that God’s people have many good reasons for fasting. Even if none of these circumstances surfaces in our lives, we should fast because we know that the Lord expects us to do so.
