This indicates that if they had left this deed and became...
This indicates that if they had left this deed and became regretful with going to Allah, they would not have been involved in such an evil fate. Then, in the next verse, it adds: “So we delivered him and the of the Ark.
And We made it a sign for all peoples.” It was made a sign for all peoples and it means that it is a gazing-stock for all people until the Hereafter Day, because the event of the Ark separated the line of the believers from disbelievers and distinguished the righteous ones from the guilty ones, in order to prove that Noah was truthful in his statement, and his people were infidels. By the way, the pronoun in the Arabic phrase: /ja‘alnaha/ refers to the Arc.
Next to the concisely explained event of Noah (as) and his people, the Qur’an refers to the story of Abraham (as), the second great arch-prophet, and says: “And (recollect) Abraham when he said unto his people ‘Worship Allah and be in owe of Him; that will be best for you if you did but know’.” Here, the noble verse has stated two important creedal and practical programs of the prophets with together, which is invitation to ‘Monotheism’ and ‘piety’.
At the end of the verse it says if you contemplate correctly, following Monotheism and piety is the best for you, because they save you in this world from pollutions of polytheism and sin and affliction, and your next world will also be with perpetual felicity.