Haste

In Book 6, the final book of this series, Amy, Paul and Frank have been commanded by the One Who Tests, God, to liberate all 20 slaver planets and have all of the hundred 'lost' planets rejoin the Isolated Planets within 142 days, at the end of that time the Enemy will attack their the Isolated Planets. It took 25 days to liberate the first slaver planet they assaulted.

The Enemy occupies over a million planets in the Milky Way Galaxy that are being sterilized of any air-breathing life, and each year they invade from sterilized planets to hundreds of thousands of new planets. They question they need to answer is, how will they stop the Enemy and rescue the Galaxy?

They have taken the first steps in recruiting and training their sword and shield army, supported by soldiers recruited from Earth. The spaceship fleet is installing upgraded piloting controls so they can out-maneuver Enemy spaceships, but the fleet training hasn't been completed. They're not ready.

Why has the One Who Tests chosen to act now, and not for the last four thousand years?

What happens if they don't meet the deadline?