cover his head # 46_1CO_11_07 # For a man indeed ought not to cover [his] head, forasmuch as he is the image and glory of God: but the woman is the glory of the man. 
uncover his head # 03_LEV_21_10 # And [he that is] the high priest among his brethren, upon whose head the anointing oil was poured, and that is consecrated to put on the garments, shall not uncover his head, nor rend his clothes;