Keluaran 12:18

12:18 In the first month, ¹  from the fourteenth day of the month, in the evening, you will eat bread made without yeast until the twenty-first day of the month in the evening.

Keluaran 13:4

13:4 On this day, ²  in the month of Abib, ³  you are going out. ⁴ 

[12:18]  ¹ tn “month” has been supplied.

[13:4]  ² tn The word הַיּוֹם (hayyom) means literally “the day, today, this day.” In this sentence it functions as an adverbial accusative explaining when the event took place.

[13:4]  ³ sn Abib appears to be an old name for the month, meaning something like “[month of] fresh young ears” (Lev 2:14 [Heb]) (S. R. Driver, Exodus, 106). B. Jacob (Exodus, 364) explains that these names were not precise designations, but general seasons based on the lunar year in the agricultural setting.

[13:4]  ⁴ tn The form is the active participle, functioning verbally.