Chasidut על אבות 1:15

Numbers 24,5. “how fair are your tents , O Yaakov, ‎your dwellings O Israel.” This may best be understood in ‎light of the sages urging us to set aside definitive hours each day ‎for Torah study. (Avot 1:15). “Yaakov” is the name used for ‎Israel when it is at “low” ebb spiritually, whereas “Israel,” is the ‎name applied to the Jewish people when they are spiritually at ‎their best. When Torah study is only an occasional activity of the ‎Jewish people, they are on the level of “Yaakov.” [The ‎word: ‎אהל‎ always denotes a temporary abode, as opposed to ‎משכן‎ ‎which always describes permanent dwellings. When Torah study ‎comprises a major part of their waking hours, i.e. it is a fixture, ‎they are referred to as Israel. Ed.]‎