לבב תולג לש םינש 'ע תוולהל לארשיל םרג רפיטופ תשא םע ונויסנב ףסוי
What Pharaoh didn't realize is that he also had the letter ה at the end of his name, which is composed of two letters, a ד and a י, which spells יד, enough. Even with just 210 years of servitude, it is enough, for Hashem was giving Am Yisrael credit for the other remaining 70 years with the galus of Bavel. It was Yosef in Mitzrayim who facilitated that this debt of seventy years will be postponed as a reward for passing his incredible test with the wife of Potifar. Chazal say that his eyes that did not look at the seductions of Potifar's wife merited him a עין דקדושה. Yaakov bentched Yosef with בן פורת עלי עין because Yosef did not look at Potifar and was an עלי עין, that he removed his eye from looking, he therefore merited to also lift up the ע years from פורת, the letters that describe the decree of 280 from the 400 year decree.
יוסף זכה במשכן שילה לאכו האורה לכב ל
Chazal also say that successfully passing his ordeal, Yosef was rewarded with עלי עין when the Mishkan was situated in Yosef's territory in Eretz Yisrael, with the privilege to eat the korbanos even outside of the walls of the Mishkan from any distance from where Shiloh could be seen. He was able to shorten the physical distance and to bring into close proximity. So too, Yosef was zoche to shortening the distance in time of ע years later of galus Bavel and lend it now to Yisrael in order that they should have fulfilled the 280 years of Galus Mitzrayim.
םמשב ה תוא ופסותינ הערפו ףסוי
This is the ה in Pharaoh's name that says די, enough galus. For the letter ה, Yosef also earned when he acquired the beracha of עלי עין as a reward for his ordeal of Potifar's wife. To this the passuk testifies עדות ביה ףסו םירצמ ץרא לע ותאצב ומש. Because Yosef passed the test with the wife of Potifar, the letter ה was added to his name that brought the geula which was still at a distance to be already here (Sotah 36b). That letter ה was instrumental in the miracle of Kerias Yam Suf. The angel in charge of the Yam Suf refused to split the sea in order to let Yisrael pass through. Its refusal was for the same reason of Pharaoh, that there are still seventy years missing. However, when it saw the coffin of Yosef travelling with Am Yisrael, it acquiesced, for it realized that Yosef earned for Klal Yisrael to lend the 70 years as if they own no more years to the Galus of Mitzrayim. As chazal say on the passuk הים ראה וינוס that the sea saw the וינס, the fleeing of Yosef from the wife of Potifar, and therefore it split its waters.
