Leviticus 23:32
It will be a Sabbath of complete rest for you, and you shall humble your souls. From the evening of the ninth day of the month until the following evening you are to observe your Sabbath.'"

Ezra 8:21
And there by the Ahava Canal, I proclaimed a fast, so that we might humble ourselves before our God and ask Him for a safe journey for us and our children, with all our possessions.

Isaiah 58:3
"Why have we fasted, and You have not seen? Why have we humbled ourselves, and You have not noticed?" "Behold, on the day of your fast, you do as you please, and you oppress all your workers.

Isaiah 58:5
Is this the fast I have chosen, a day for a man to deny himself, to bow his head like a reed, and to spread out sackcloth and ashes? Will you call this a fast and a day acceptable to the LORD?

Daniel 10:12
"Do not be afraid, Daniel," he said, "for from the first day that you purposed to understand and to humble yourself before your God, your words were heard, and I have come in response to them.