Definition and Context:
The term "every city" in the Bible often refers to the collective cities within a specific region or territory. It is used to emphasize the comprehensive nature of an event, command, or action that affects all urban centers within a given area. This phrase underscores the widespread impact or reach of God's actions, the movements of His people, or the consequences of disobedience.

Biblical References:

1. Joshua's Conquests:
In the book of Joshua, the phrase "every city" is frequently used to describe the thoroughness of the Israelites' conquest of Canaan. Joshua 10:40 states, "So Joshua conquered the whole region—the hill country, the Negev, the foothills, and the slopes, together with all their kings. He left no survivors. He devoted to destruction everything that breathed, just as the LORD, the God of Israel, had commanded." This passage highlights the complete obedience to God's command to take possession of the Promised Land.

2. Judgment and Prophecy:
The prophets often used "every city" to convey the totality of God's judgment against nations. For example, in Jeremiah 4:29 , it is written, "Every city flees at the sound of the horsemen and archers. They enter the thickets and climb among the rocks. Every city is abandoned; no inhabitant is left." This illustrates the comprehensive nature of the impending judgment and the desolation that follows.

3. Jesus' Ministry:
In the New Testament, "every city" is used to describe the widespread reach of Jesus' ministry. Luke 8:1 records, "Soon afterward, Jesus traveled from one town and village to another, proclaiming the good news of the kingdom of God. The Twelve were with Him." This passage emphasizes the extensive nature of Jesus' mission to spread the Gospel throughout the region.

4. Apostolic Missions:
The apostles continued the work of spreading the Gospel to "every city." Acts 14:23 notes, "Paul and Barnabas appointed elders for them in every church, and with prayer and fasting, they committed them to the Lord, in whom they had believed." This indicates the establishment of church leadership in every city where believers were present, ensuring the growth and stability of the early Christian communities.

Theological Significance:
The use of "every city" in Scripture serves to highlight the universality of God's sovereignty and the comprehensive nature of His plans. Whether in judgment or blessing, the phrase underscores that no place is beyond God's reach or concern. It also reflects the thoroughness with which God's people are to carry out His commands, whether in conquest, ministry, or the establishment of His church.

Historical and Cultural Insights:
In ancient times, cities were centers of power, culture, and commerce. The mention of "every city" in biblical narratives often signifies the strategic importance of these locations in God's redemptive history. The complete conquest or evangelization of cities symbolized the establishment of God's kingdom and authority over the earth.

Practical Application:
Believers today can draw inspiration from the biblical use of "every city" to understand the importance of reaching all areas with the message of the Gospel. It serves as a reminder of the call to evangelize and disciple nations, ensuring that every community experiences the transformative power of God's love and truth.