In part of Genesis we see something 3 times over just 18 verses. I'm wondering why the author might go beyond repeating just once.
Gen 6:18 But with thee will I establish my covenant; and thou shalt come into the ark, thou, and thy sons, and thy wife, and thy sons' wives with thee. (KJV)
Gen 7:5-7 And Noah did according unto all that the LORD commanded him. And Noah was six hundred years old when the flood of waters was upon the earth. And Noah went in, and his sons, and his wife, and his sons' wives with him, into the ark, because of the waters of the flood. (KJV)
Gen 7:13 In the selfsame day entered Noah, and Shem, and Ham, and Japheth, the sons of Noah, and Noah's wife, and the three wives of his sons with them, into the ark; (KJV)
Q: Why might the author have us read the same thing 3 times over just 18 verses?