Q. Suppose our Heavenly God is mercy. I don’t understand why in the Noah’s Ark story He destroys every living thing on earth just because people did not pray and remember Him? Could a Creator have the right to destroy creatures? Similarly, can parents take their child’s life when the child is not listening to them or showing respect to the parents?
A. God’s justification for destroying the Creation in the flood goes well beyond your statement. For instance Genesis 6:5 tells us the Lord saw how great man’s wickedness on the earth had become, and that every inclination of the thoughts of his heart was only evil all the time.
But it is the Creator’s right to destroy His creation, especially when they rebel against him and reject the provision He has made for saving them. There was plenty of room on the ark for anyone who wanted to climb aboard, and God left the door open for 7 days after Noah and his family entered it (Genesis 7:10). Likewise there’s plenty of room in Heaven for anyone who calls upon the name of the Lord today (Romans 10:13).
Parents don’t create their children. The birthing process is called procreation, which means to produce offspring, and was delegated to mankind by God. In exchange, parents are given a stewardship responsibility for the children they procreate. Throughout history the murder of children has been a sin certain to evoke the wrath of God because He thinks of them as His.