Overall meaning : Allah, Exalted be He, states that if every person that has done wrong by disbelieving in Him or associating partners with Him and worshipping them besides Him possessed all that is on earth, he would gladly offer that as ransom on Judgement Day to be saved from the punishment, but even then it would by no means be accepted. The unbelievers will hide their remorse when they see Allah’s punishment on that day and become certain it will be inflicted on them. Allah will then judge them in all fairness and will not wrong them in any way.
Surely to Allah belongs all that the heavens and the earth contain. Surely the promise of Allah is true, but most of these idolaters do not know it.
It is He Who gives life and takes it away, and to Him will you all, mankind, be brought back after your death, so that He will repay you on the Day of Resurrection according to your deeds.