'Low' in the Bible

Then I gave orders for a time of going without food, there by the river Ahava, so that we might make ourselves low before our God in prayer, requesting from him a straight way for us and for our little ones and for all our substance.

And at the evening offering, having made myself low before God, I got up, and with signs of grief, falling down on my knees, with my hands stretched out to the Lord my God,