Year 7 · Religious education · Religion, ethics and philosophy · Lesson 3
The first cause argument
The first cause (cosmological) argument: Thomas Aquinas's Five Ways, infinite regress, links with the Big Bang and Georges Lemaître, and objections such as ‘what caused God?’ and Bertrand Russell's view.

18-minute video lesson
Teaching, worked examples and 20 practice questions solved step by step.
Watch free for a monthWhat your child will learn
- Explain the first cause argument
- Describe Aquinas's contribution
- Explain links with the Big Bang
- Evaluate the argument with objections
The method
- Explain.
- Who.
- Strength + weakness.
- Judge.
Key words: first cause, cosmological argument, Aquinas, infinite regress, Big Bang, Russell, eternal.
Worked examples
The first three practice questions from the lesson, with every step.
Question 1
What is the first cause argument?
- Step 1: Chain
Answer: everything has a cause, so there must be an uncaused first cause: God
Question 2
Who is most linked to the first cause argument?
- Step 1: Thomas...
Answer: Thomas Aquinas
Question 3
When did Aquinas live?
- Step 1: 1200s
Answer: 1225-1274