This fact calls to mind some important advice from our Creator: "More than all else that is to be guarded, safeguard your heart, for out of it are the sources of life."  - Proverbs 4:23.
(Luka 6:45) Hikwalaho, Bibele ya hi khutaza yi ku: "Hlayisa mbilu ya wena ku tlula hinkwaswo leswi swi faneleke swi hlayisiwa, hikuva swihlovo swa vutomi swi le ka yona." - Swivuriso 4:23.