Yet seven days, or, after seven days, the Hebrew Lamed being put for after, as it is Exodus 16:1 Psalms 19:3 Jeremiah 41:4. Or, within seven days, which time God allowed to the world as a further space of repentance, whereof therefore it is probable Noah gave them notice; and it is not unlikely that many of them who slighted the threatening when it was at one hundred and twenty years distance, now hearing a second threatening, and considering the nearness of their danger, might be more affected and brought to true repentance; who though destroyed in their bodies by the flood for their former and long impenitency, which God would not so far pardon, yet might be saved in their spirits. See 1 Peter 4:6. And as some preserved in the ark were damned, so others drowned in the deluge might be eternally saved. And every living substance, all that hath in it the breath of life, as was said Genesis 6:17.
Related Commentaries of Genesis 7:4
Genesis 7:4
4 For yet seven days, and I will cause it to rain upon the earth forty days and forty nights; and every living substance that I have made will I destroyc from off the face of the earth.