ועיני לאה רכות, “Leah’s eyes were soft, so that due to her beautiful eyes she appeared beautiful all over,”[the expression רך appears next to טוב, “good, when” the calf served by Avraham to the angels in Genesis 18,7 is described) in contrast to Rachel, whose body was beautiful, but whose eyes detracted from this as she cried a lot, fearing that her lot would be to be married to Esau after Yaakov would divorce her due to her barrenness. (No source quoted for this unusual interpretation)

כי מלאו ימי, “for my days have been completed;” Yaakov means that the number of years since he came to live with him have been completed. Fourteen years have elapsed since he received his father’s blessing when he had been sixty three years old, during which he had been hiding, so that he had been 77 years old when he came to Lavan. The numerical value of the letters in the word מלאו totals 76. [If I understand the author correctly, he means that Yaakov was not telling Lavan the obvious, as he knew that Lavan could count seven years. He hinted to Lavan that seeing he was by now 84 years old it was high time that he married and started a family. Ed.]

ויאסוף לבן....ויעש משתה, Lavan assembled the people from Charan and arranged a feast. Lavan was a swindler, and that is why he is always referred to by our sages as “Lavan the swindler.” He planned to make Yaakov drunk in order to deceive him so that he could not tell the difference between Rachel and Leah. If we needed proof for this interpretation, we only need to look at when he gave Rachel to Yaakov a week later, when he did not spend a penny on making a celebration.

ויהי בבוקר, “when it had become morning, etc.” during the entire night Leah had pretended to be Rachel, using three different items to identify herself as her sister, which Rachel had received from Yaakov, one had to do with the laws of menstruation, the second one with the laws of challah, and the third one with the lighting of candles on Friday night. We are told the following in B’reshit Rabbah 70,19: all night long people were singing what sounded like the praises of Leah, sort of hinting to Yaakov that he was being swindled. Yaakov, who had no reason to fear that the town’s people wished him ill, did not suspect being tricked when Leah always answered when he addressed her as Rachel. In the morning when he found out that he had been tricked by Leah, and he complained to her, she responded that she had learned from him to do this, as when Yitzchok had asked him if he was his firstborn son Esau, he had answered in the affirmative. This is when Yaakov began to hate her as is reported in verse 31, where G–d is reported as taking note of that. Yitzchok himself had told Esau that his brother had tricked him.

'הפעם אודה לה, “this time I give thanks to the Lord;” she foresaw that her son Yehudah would admit having wronged Tamar and embarrassing himself greatly in the process. (Genesis 38,26) She therefore decided to admit that she had been very wrong in deceiving Yaakov by posing as Rachel.