What does Genesis 7:15 mean?

Animals, birds, and creeping things of every kind were saved from the flood by entering into the ark with Noah. They arrived as pairs, male and female, entering the ark together. Noah was not an animal whisperer. Prior verses indicated that God would send the animals to Noah, rather than Noah being expected to capture them (Genesis 6:20). This chapter describes nothing less than a supernatural work of God, carefully and powerfully orchestrated, to save every kind of air-breathing life on the planet from the judgment of God's wrath.

Most of this information is not new, but the Bible often repeats details in order to make a point. God's will, and His knowledge, are specific. When He says something will occur, it occurs exactly as He predicted. Here, rather than simply noting that animals went onto the ark, Genesis re-describes the same basic instructions God gave earlier. The purpose is to emphasize God's omniscience and omnipotence, and the truth of His words.