'Pollute' in the Bible

And ye shall not pollute the land wherein ye are; for blood, it polluteth the land; and there can be no atonement made for the land, for the blood that hath been shed therein, but by the blood of him that shed it.

I have put off my tunic, how should I put it on? I have washed my feet, how should I pollute them? --

And Daniel purposed in his heart that he would not pollute himself with the king's delicate food, nor with the wine which he drank; and he requested of the prince of the eunuchs that he might not have to pollute himself.