(1) Observe the month of Abib and offer a passover sacrifice to the ETERNAL your God, for it was in the month of Abib, at night, that the ETERNAL your God freed you from Egypt.

שמור את חדש האביב WATCH THE MONTH OF ABIB — This means: Before it comes watch whether it will be capable of producing ripe ears (אביב), so that one may offer the Omer meal-offering during it, and if not (i.e. if you observe that the ears will not be ripe by the 16th of Nisan), then intercalate the year (i.e. add a month to the winter-period, so that the month Abib falls later than it otherwise would, by which time the ears will be ripened) (cf. Sanhedrin 11b and Note 4 on p. 191 of Leviticus in the Silbermann edition of the Pentateuch).

§ Rabbi Simlai taught: There were 613 mitzvot stated to Moses in the Torah, consisting of 365 prohibitions corresponding to the number of days in the solar year, and 248 positive mitzvot corresponding to the number of a person’s limbs. Rav Hamnuna said: What is the verse that alludes to this? It is written: “Moses commanded to us the Torah, an inheritance of the congregation of Jacob” (Deuteronomy 33:4). The word Torah, in terms of its numerical value [gimatriyya],

With regard to the dates of these festivals, the Sages taught: When Adam the first man saw that the day was progressively diminishing, as the days become shorter from the autumnal equinox until the winter solstice, he did not yet know that this is a normal phenomenon, and therefore he said: Woe is me; perhaps because I sinned the world is becoming dark around me and will ultimately return to the primordial state of chaos and disorder. And this is the death that was sentenced upon me from Heaven, as it is written: “And to dust shall you return” (Genesis 3:19). He arose and spent eight days in fasting and in prayer.Once he saw that the season of Tevet, i.e., the winter solstice, had arrived, and saw that the day was progressively lengthening after the solstice, he said: Clearly, the days become shorter and then longer, and this is the order of the world. He went and observed a festival for eight days. Upon the next year, he observed both these eight days on which he had fasted on the previous year, and these eight days of his celebration, as days of festivities. He, Adam, established these festivals for the sake of Heaven, but they, the gentiles of later generations, established them for the sake of idol worship.

(14) Next [God] brought me to the entrance of the north gate of the House of GOD; and there sat the women bewailing Tammuz. (15) I was told, “Have you seen, O mortal? You shall see even more terrible abominations than these.”

(1) In the thirtieth year, on the fifth day of the fourth month, when I was in the community of exiles by the Chebar Canal, the heavens opened and I saw visions of God.

The following supports that [statement] of Rabbi Yudan in the name of Rabbi Aivu: There was an incident involving a certain person who was plowing. One of his oxen lowed. A certain Arab passed near him and said to him: ‘What are you?’ He said to him: ‘I am a Jew.’ He said to him: ‘Unharness your ox, untie your plow.’ He said to him: ‘Why?’ He said to him: ‘The Temple of the Jews is destroyed.’ He said to him: ‘How do you know?’ He said to him: ‘I know it from the lowing of your ox.’ While he was still conversing with him, it lowed again. He said to him: ‘Harness your ox, tie your plow, as the redeemer of the Jews was born.’ He said to him: ‘What is his name?’ He said to him: ‘His name is Menaḥem.’ ‘What is his father’s name?’ He said to him: ‘Hezekiah.’ He said to him: ‘Where do they live?’ He said to him: ‘In Birat Arva, that is in Bethlehem of Judah.’ That man sold his oxen, sold his plow, and became a seller of felt garments for children. He would enter a city and leave a city, enter a province and leave a province, until he arrived there.
All of the women of the village came to purchase from him, but the mother of a certain child did not purchase from him. He said to her: ‘Why are you not purchasing children’s garments of felt?’ She said to him: ‘Because my child has a harsh fate.’ He said to her: ‘Why?’ She said to him: ‘Because upon his arrival, the Temple was destroyed.’ He said to her: ‘We rely on the Master of the universe that upon his arrival it was destroyed and upon his arrival it will be rebuilt.’ He said to her: ‘Take one of these felt garments for your child, I will come some time later to your house and collect your payment.’ She took it and she went. Some time later that man said: ‘I will go and see how that child is doing.’ He came to her, he said to her: ‘How is the child doing?’ She said to him: ‘Did I not say to you that he has a harsh fate? Even upon his arrival there was a foreboding omen. Since that time, winds and storms carried him away.’ He said to her: ‘Did I not tell you that upon his arrival it was destroyed and upon his arrival it will be rebuilt?’
Rabbi Avun said: Why must I learn this from Arabs, is it not an explicit verse? As it is written: “The Lebanon will fall by a mighty one” (Isaiah 10:34), and it is written immediately thereafter: “A branch will emerge from the trunk of Yishai and a shoot will sprout from his roots” (Isaiah 11:1).