Apparently, we know more about the moon than we know about the depths of the oceans on our own planet. That’s how impenetrable and inaccessible the deep sea is.

Micah says to God, ‘Once again You will have compassion on us. You will trample our sins under Your feet and throw them into the depths of the ocean!’ (Micah 7:19 http://bit.ly/2InuQyA)

God got rid of your sin. He drowned it in the unfathomable depths of the deepest sea. How awesome that you don’t need to keep on calling it to mind when He has put it completely out of His.