'Pure' in the Bible

Nay, I even reckon all things as pure loss because of the priceless privilege of knowing Christ Jesus my Lord. And for His sake I have suffered the loss of everything, and reckon it all as mere refuse, in order that I may win Christ and be found in union with Him,

Finally, brethren, whatever is true, whatever wins respect, whatever is just, whatever is pure, whatever is lovable, whatever is of good repute--if there is any virtue or anything deemed worthy of praise--cherish the thought of these things.