'Lord' in the Bible

Look! The ark of the covenant of the Lord of all the earth [is about to] cross [over] ahead of you into the Jordan.

When the soles of the feet of the priests carrying the ark of Yahweh, Lord of all the earth, rest in the waters of the Jordan, the waters of the Jordan will be cut off {upstream}, and they will stand [still in] one heap.

And he said, "Neither. I have come now [as] the commander of Yahweh's army." And Joshua fell on his face to the earth, and {he bowed down} and said to him, "What [is] my lord commanding his servant?"

And Joshua said, "Ah, my Lord! Why did you bring this people across the Jordan to give us into the hand of the Amorites to destroy us? If only we had been content and stayed beyond the Jordan.

Please, my Lord! What can I say after {Israel has fled from its enemies}?