'Walk' in the Bible

if we may say -- 'we have fellowship with Him,' and in the darkness may walk -- we lie, and do not the truth;

and if in the light we may walk, as He is in the light -- we have fellowship one with another, and the blood of Jesus Christ His Son doth cleanse us from every sin;

He who is saying in him he doth remain, ought according as he walked also himself so to walk.

and he who is hating his brother, in the darkness he is, and in the darkness he doth walk, and he hath not known whither he doth go, because the darkness did blind his eyes.