Infinity: The characteristic of having no bounds or limits. In classical theism, many of God’s attributes, such as knowledge, power and love, are viewed as infinite. In set theory, infinite is often defined as the property of a set that has a subset whose members can be placed in a one-to-one correspondence with the original set, as is the case for the natural numbers and the even integers. With respect to a series, there is debate among philosophers as to whether an actual infinite is possible, as opposed to a procedure that can in principle be repeated endlessly. Those who deny an actual infinite must also deny that the universe is infinitely old.1
1. C.Stephen Evans, Pocket Dictionary of Apologetics & Philosophy of Religion (Downers Grove, IL: InterVarsity Press, 2002), p. 61.