‘Abib’ in Hebrew is Aviv (אביב), meaning ‘springtime.’ The Torah has already stated that the redemption from Egypt took place in the first month, the month of Nissan, which is in the springtime. Why is it necessary to state explicitly that in happened in the month of Aviv? Emphasizing that the redemption took place in the spring highlights Hashem’s love and compassion for His children. He made sure to free the Israelites and set them on their journey through the desert when the weather was most pleasant; not too hot, too cold or too rainy. Furthermore, as springtime symbolizes the rebirth of the land, there was no better time to experience the rebirth of the nation than the spring.