'Commencement' in the Bible

And it cometh to pass, after the death of Joshua, that the sons of Israel ask at Jehovah, saying, 'Who doth go up for us unto the Canaanite, at the commencement, to fight against it?'

And they rise and go up to Beth-El, and ask of God, and the sons of Israel say, 'Who doth go up for us at the commencement to battle with the sons of Benjamin?' and Jehovah saith, 'Judah -- at the commencement.'