Caravaggio, Saint Jerome Writing (c. 1605), Galleria Borghese. Public domain.
3 verses in the King James Version. Word study for “saith” →
He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
He that saith he abideth in him ought himself also so to walk, even as he walked.
He that saith he is in the light, and hateth his brother, is in darkness even until now.