How did ancient tribes actually receive their land? It wasn't first-come, first-served, but a carefully managed process called 'casting lots'.
The phrase 'the third lot came up' signifies that the land was divided by casting lots. This wasn't a game of chance, but a method used to ensure divine order and fairness in distributing the Promised Land among the twelve tribes.
This practice is rooted in the belief that God Himself directed the lots, thereby assigning each tribe its specific inheritance. Even though the exact process isn't detailed, the outcome was seen as God's sovereign decision. It removed human favoritism and ensured that each tribe received a portion according to God's plan, not man's. The placement of Zebulun's lot, specified as extending to Sarid, was part of this divinely guided distribution.