Isaiah tells a parable about a farmer and his vineyard. The farmer represents God and the vineyard represents the people of Judah, the southern kingdom of the Israelites. (See: [[rc://en/ta/man/translate/figs-parables]])
"He made a tall building in the middle of the vineyard to watch over it." Someone would stand at the top of the tower to watch the vineyard and make sure that no animals or people went into it. The full meaning of this statement can be made clear. (See: [[rc://en/ta/man/translate/figs-explicit]])
"dug a pit to squeeze out the grape juice." A winepress is a low place carved out of rock in the ground where workers step on the grapes to crush them with their feet, in order to remove the grape juice.