As long as Yisrael does not dwell on its Land, the Land does not give her fruits as she is accustomed. When she will begin to flower again, however, and give of her fruits, this is a clear sign that the end — the time of the Redemption — is approaching when all of Yisrael will return to its Land. The Maharsha
The Book of Vayikra begins a series of complex laws about the service of the Holy Temple, but even though the laws of the Torah are precise, they require individual creativity.