Solved Exercises on Introduction to the Study of End Times in Grade 1

Master biblical numerology and prophetic measurements: symbolic counting, time periods, and mathematical patterns through these 5 detailed exercises.

Solution: Exercises 1 to 3
1 Biblical Numerology
Exercise 1
Count the number of days in 7 years of tribulation:
If 1 year = 360 days, calculate 7 years
Definition:

Biblical Year: In prophetic literature, 1 year often equals 360 days (based on lunar calendar)

Calculation method:
  1. Identify the base unit (360 days per year)
  2. Multiply by the number of years (7)
  3. Calculate the total
Expression
7 × 360
Calculation
2,520 days
Step 1: Understand biblical measurement

In prophetic texts, years often have 360 days (not 365), following ancient lunar calendars

Step 2: Set up multiplication

7 years × 360 days/year = ?

Step 3: Calculate

7 × 360 = 2,520 days

7 years = 2,520 days
Final answer:

7 years of tribulation = 2,520 days

Applied rules:

• Biblical Calendar: Prophetic years = 360 days

• Multiplication: Number of units × Base value

• Symbolism: Numbers in prophecy often carry spiritual significance

Key Note: In biblical prophecy, 7 represents completion/perfection. 7 years = full period of tribulation.
Common Mistake: Don't confuse prophetic years (360 days) with regular years (365 days).
2 Prophetic Time Periods
Exercise 2
Calculate 1260 days in months:
If 1 month = 30 days, how many months is 1260 days?
Definition:

Prophetic Month: In apocalyptic literature, 1 month often equals 30 days

Expression
1260 ÷ 30
Division
42 months
Step 1: Understand the relationship

1260 days ÷ 30 days per month = ? months

Step 2: Perform division

1260 ÷ 30 = 42

Step 3: Verify calculation

42 × 30 = 1260 ✓

1260 days = 42 months
Final answer:

1260 days = 42 months

Applied rules:

• Prophetic Measurement: 1 month = 30 days in biblical context

• Division: Total ÷ Unit = Number of units

• Verification: Always check by multiplication

Key Note: 1260 days = 42 months = 3.5 years (half of 7 years of tribulation).
Important: 1260 is a significant number in Revelation (Rev 12:6, 12:14).
3 Symbolic Measurements
Exercise 3
Calculate time periods:
If 1 day = 1 year (prophetic principle), then 42 months = ? years
Definition:

Day-Year Principle: In prophecy, 1 day often represents 1 year (Num 14:34, Ezek 4:6)

Expression
42 months
Conversion
3.5 years
Result
3.5 years
Step 1: Convert months to days

42 months × 30 days/month = 1260 days

Step 2: Apply day-year principle

1260 days (literal) = 1260 years (prophetic)

Step 3: Alternative calculation

42 months ÷ 12 months/year = 3.5 years

Step 4: Verify the relationship

3.5 years × 360 days/year = 1260 days

42 months = 1260 days = 3.5 years
Final answer:

42 months = 3.5 years (time of great tribulation)

Applied rules:

• Day-Year Principle: 1 day = 1 year in prophecy

• Proportional Reasoning: Maintain consistent units

• Biblical Context: Numbers have spiritual significance

Key Note: 3.5 years = "time, times, and half a time" (Rev 12:14).
Important: This represents the midpoint of the 7-year tribulation period.
Rules and methods, laws,...
1 year = 360 days
Biblical Calendar
Principle 1
1 day = 1 year
Day-Year Principle
Principle 2
1 month = 30 days
Lunar Calendar
Principle 3
7 years = 2520 days
Tribulation Period
Key definitions:

Biblical Numerology: Study of numbers in Scripture and their spiritual significance

Prophetic Measurement: Special numerical systems used in apocalyptic literature

Symbolic Counting: Numbers that represent concepts beyond literal quantities

Complete methodology:
  1. Identify the unit: Recognize biblical vs. standard measurements
  2. Choose the conversion: Apply day-year principle or lunar calendar
  3. Perform the calculation: Use multiplication or division
  4. Verify the context: Check against biblical references
Common errors: Using standard calendar (365 days) instead of prophetic (360 days), forgetting day-year principle.
Key insight: Numbers in prophecy often relate to 7 (completion), 12 (government), and 40 (testing).
Solution: Exercises 4 to 5
4 Geometric Symbolism
Exercise 4
Calculate dimensions:
If New Jerusalem is 12,000 stadia square, what is its perimeter?
Definition:

New Jerusalem: Holy city described in Rev 21:16 as 12,000 stadia each side

Expression
Square perimeter
Formula
4 × side length
Calculation
4 × 12,000 = 48,000
Step 1: Identify shape and measurements

New Jerusalem is a cube/square with each side = 12,000 stadia (Rev 21:16)

Step 2: Apply perimeter formula

Perimeter of square = 4 × side length

Perimeter = 4 × 12,000 stadia

Step 3: Calculate the result

4 × 12,000 = 48,000 stadia

Step 4: Verify the calculation

12,000 + 12,000 + 12,000 + 12,000 = 48,000 ✓

Perimeter = 48,000 stadia
Final answer:

New Jerusalem perimeter = 48,000 stadia

Applied rules:

• Geometric Formula: Perimeter of square = 4 × side

• Biblical Measurement: Stadia as unit (1 stadion ≈ 607 ft)

• Symbolism: 12,000 represents completeness (12 × 1000)

Key Note: 12,000 = 12 (tribes) × 1000 (divine completeness).
Important: The city is cubic (equal in all dimensions) like the Most Holy Place.
5 Prophetic Cycles
Exercise 5
Calculate cycles:
If Daniel's 70 weeks = 490 years, how many years per week?
Definition:

Daniel's Weeks: Prophecy in Dan 9:24-27 of 70 "weeks" (sevens) of years

Expression
490 ÷ 70
Division
7 years
Result
7 years per week
Step 1: Understand the prophecy

Daniel 9:24 mentions 70 "weeks" (Hebrew: shabuwa') meaning "sevens" of years

Step 2: Set up the division

Total years ÷ Number of weeks = Years per week

490 ÷ 70 = ?

Step 3: Calculate

490 ÷ 70 = 7 years per "week"

Step 4: Verify

70 weeks × 7 years/week = 490 years ✓

Step 5: Interpret symbolically

Each "week" represents 7 years, continuing the pattern of 7 as completeness

1 week = 7 years
Final answer:

Each of Daniel's 70 weeks = 7 years

Applied rules:

• Prophetic Unit: "Week" = 7 years in Daniel's prophecy

• Division: Total ÷ Parts = Value per part

• Biblical Context: Hebrew word "shabuwa'" means "seven"

Key Note: The 70th week is yet future and corresponds to the 7-year tribulation.
Important: The Messiah was cut off after 69 weeks (483 years).
Key Laws, Methods, Rules, and Definitions for End Times Study
1 year = 360 days
Biblical Calendar System
Key definitions:

Biblical Numerology: Study of numbers in Scripture and their spiritual significance

Prophetic Measurement: Special numerical systems used in apocalyptic literature

Symbolic Counting: Numbers that represent concepts beyond literal quantities

Day-Year Principle: 1 day in prophecy represents 1 year in fulfillment

Complete methodology:
  1. Recognize Units: Distinguish between standard and prophetic measurements
  2. Apply Principles: Use day-year principle, lunar calendar (30 days/month)
  3. Perform Calculations: Multiplication, division, conversions
  4. Verify Context: Check against biblical references and symbolism
Tip 1: Always use 360 days for prophetic years, not 365.
Tip 2: Remember the day-year principle: 1 day = 1 year in prophecy.
Tip 3: The number 7 represents completion, 12 represents government, 40 represents testing.
Tip 4: Always verify calculations by working backwards.
Common errors: Confusing standard and prophetic calendars, misapplying day-year principle, forgetting symbolic meanings.
Memorization aids: 1260 days = 42 months = 3.5 years, 7 years = 2520 days.
Essential formulas and principles:

• Prophetic Year: 1 year = 360 days

• Prophetic Month: 1 month = 30 days

• Day-Year Principle: 1 day = 1 year

• Tribulation: 7 years = 2520 days

• Half-Tribulation: 3.5 years = 1260 days = 42 months

Questions & Answers

Question: Why do we use 360 days for a prophetic year instead of 365 days? It seems strange.

Answer: Great question! The 360-day year comes from the ancient lunar calendar system used in biblical times:

  • Prophetic calendars were based on lunar cycles, where 12 months × 30 days = 360 days
  • This creates neat mathematical patterns that work well with symbolic numbers (multiples of 3, 4, 5, 7, 12)
  • Scripture specifically uses these numbers: Revelation speaks of 1260 days, 42 months, etc.

Example: 1260 days ÷ 30 days/month = 42 months (exactly). With 365-day years, the math doesn't work as cleanly for symbolic purposes.

The 360-day system emphasizes the divine precision and symbolic nature of prophetic time periods.

Question: I'm confused about the "day-year principle." How do we know when 1 day means 1 year?

Answer: The day-year principle is established by Scripture itself:

  • Numbers 14:34: "According to the number of the days in which you spied out the land, even forty days, for every day a year shall ye bear your iniquities, even forty years."
  • Ezekiel 4:6: "I have appointed thee each day for a year."
  • This principle applies specifically to prophetic time periods in apocalyptic literature.

In Daniel's 70 weeks and Revelation's time periods, this principle helps us understand the actual duration of prophetic events.

Key rule: Look for specific biblical time prophecies where God explicitly states the day-year relationship.

Question: What makes the number 1260 so important in end times prophecy?

Answer: The number 1260 appears multiple times in Revelation and carries significant meaning:

  • Revelation 11:3: The two witnesses prophesy for 1260 days
  • Revelation 12:6: The woman flees into wilderness for 1260 days
  • Revelation 12:14: The woman is nourished for "a time, times, and half a time"

Mathematical relationships: 1260 = 3.5 × 360 (3.5 prophetic years) = 42 × 30 (42 months)

Symbolically, 1260 represents the period of great tribulation (the last 3.5 years of the 7-year tribulation period) when persecution intensifies.

It's exactly half of 7 years (2520 days), representing the most intense period of end-time events.