Jesus is not claiming that salt will lose its salty qualities, but rather that salt is useless if it does not have the qualities of salt. Likewise, those who claim to follow him but do not live out the ideals of the kingdom are ineffective and unfruitful servants (see 2 Peter 1:8–9) and they do not truly belong. 1 Just as faith without works is impossible (James 2:26), so it is with salt without that has no saltiness.
13 Vous êtes le sel de la terre. Mais si le sel perd sa saveur, avec quoi la lui rendra-t-on? Il ne sert plus qu'à être jeté dehors, et foulé aux pieds par les hommes.