ISB ~ Matthew 5 v13 - 14

Two illustrations show that disciples must be true to their calling lest they render themselves useless for the kingdom. Being the salt of the earth, they are to season and preserve the world with peace (Mk 9:50) and gracious speech (Col 4:5). Being the light of the world, they are to bear witness to Jesus and his message (Jn 1:9; 8:12).

• Both images have links with the OT. Salt is associated with the covenant of priesthood made with Aaron and his descendants (Num 18:19) as well as the covenant of kingship made with David and his descendants (2 Chron 13:5). Light is associated with the OT vocation of Israel to make the truth and justice of God shine out to all nations (Is 42:6; 49:6).