'Expense' in the Bible

Then King Solomon swore by Yahweh, saying, "Thus may God do to me and thus may he add, if Adonijah hasn't spoken this thing at the expense of his life.

And I issue forth a decree for what you should do for these elders of the Jews to build this house of God. The full expense will be paid to these men from the riches of the king from the taxes of [the province] Beyond the River, without delay.

Who ever serves as a soldier at his own expense? Who plants a vineyard and does not eat the fruit of it? Who shepherds a flock and does not drink from the milk of the flock?