Genesis 8:5

“And the waters decreased continually until the tenth month, etc.] That is, from the seventeenth of the seventh month, to the first of the tenth month, a space of two months and thirteen days, and being summer time, through the heat of the sun, they decreased apace: in the tenth [month], on the first [day] of the month, were the tops of the mountains seen; not the tenth month of the flood, but of the year; the month Tammuz, as the Targum of Jonathan, and answers to part of June, and part of July; and the first day of this month, according to Bishop Usher f453 , was Sunday the nineteenth of July: but according to Jarchi, whom Dr. Lightfoot f454 follows, this was the month Ab, which answers to…”

“And the waters decreased continually--The decrease of the waters was for wise reasons exceedingly slow and gradual--the period of their return being nearly twice as long as that of their rise.”

“- The Land Was Dried 1. שׁכך shākak “stoop, assuage.” 3. חסר chāsar “want, fail, be abated.” 4. אררט 'ărārāṭ, “Ararat,” a land forming part of Armenia. It is mentioned in 2 Kings 19:37, and Isaiah 37:38, as the retreat of Adrammelek and Sharezer after the murder of their father; and in Jeremiah 51:27 as a kingdom. 8. קלל qālal, “be light, lightened, lightly esteemed, swift.” 10. חוּל chûl, “twist, turn, dance, writhe, tremble, be strong, wait.” יהל yāchal “remain, wait, hope.” 13. חרב chāreb, “be drained, desolated, amazed.” Genesis 8:1-3 The waters commence their retreat. “And God remembered Noah.” He is said to remember him when he takes any step to deliver him from the waters.…”

“The tops of the mountains were seen - Like little islands appearing above water. They felt ground above forty days before they saw it, according to Dr. Lightfoots's computation, whence he infers that if the waters decreased proportionably, the ark drew eleven cubits in water. Genesis 8:7”

“8:5 the waters continued to go down: Another parallel with the creation week (see 1:9) suggests that the earth’s restoration was effectively a new creation (see study note on 8:1).”

“decreased continually: Heb. were in going and decreasing, the tenth. Gen 7:11 Genesis 8:6”