Isaiah 58.6-10 ‘Your light shall break forth like the dawn’
1 Corinthians 2.1-5
‘I proclaimed to you the mystery of Christ crucified.’
Matthew 5.13-16
‘You are the light of the world.’
Let
your light shine before others,
so that
they may see your good works
and give
glory to your Father who is in heaven. (Matthew 5.16)
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In our Gospel reading today, Jesus places before us
two vivid and compelling images of what it means to be his disciples.
He does not simply suggest that we might become
these things, nor does he offer them as distant aspirations.
Instead, he speaks with striking directness: you
are the salt of the earth; you are the light of the world.
These are not optional extras for the especially
keen or the particularly holy.
They are declarations of identity.
Jesus tells us who we already are by virtue of
belonging to him.
These sayings could not be more fitting on a day
when we celebrate a baptism—both in the life of this parish and in the life of
the Church Universal.
Baptism is the moment when a person is drawn into
the life of Christ, grafted into his Body, and marked with his identity.
Today N enters into that life, and so these
images of salt and light speak directly into the faith she receives and the
vocation she begins.
Salt has remarkable properties.
In the ancient world it was essential for preserving
food, preventing decay, and enabling life to flourish in harsh climates.
It also seasons food, enhancing and drawing out the
flavours already present.
Yet salt must be used wisely.
Too little and it is ineffective; too much and it
overwhelms, even destroys.
In large quantities it can kill vegetation and
render land barren.
Salt is powerful, and its power must be rightly
ordered.
So why does Jesus say to his disciples, you are
the salt of the earth?
On one level, he is encouraging them—and us—to see
ourselves as those who bring flavour and depth to the world, who draw out the
goodness of God’s creation, who preserve what is holy and life-giving.
Christians are meant to make the world taste more
like the Kingdom.
But there is a deeper resonance.
In Scripture, salt is closely associated with
covenants—the sacred relationships into which God draws his people.
The Covenant of Priesthood with Aaron and his
descendants is described as a ‘covenant of salt’ (Numbers 18.19).
Likewise, the Covenant of Kingship made with David
is sealed with salt (2 Chronicles 13.5).
Salt symbolises permanence, fidelity, and the
enduring nature of God’s promises.
In baptism we are formed as prophets, priests, and
kings in Christ.
We are drawn into the Covenant of Grace sealed by
his blood.
In the early Church, a small pinch of salt was
placed on the tongue of the person being baptised.
This sal sapientiae—the ‘salt of wisdom’—symbolised
purification, preservation from corruption, and the reception of divine
understanding.
It was a sign that the newly baptised was being
strengthened to live faithfully within God’s covenant.
So when Jesus asks, if salt has lost its taste,
how shall its saltiness be restored?, he is not merely offering a culinary
observation.
He is speaking of covenant faithfulness.
If we, who are the salt of the earth, lose our
saltiness, we cease to draw out the flavours of the Kingdom; we cease to
preserve the way of the Lord; We fail to live the life into which we were
baptised.
Salt loses its flavour when God’s people forget who
they are.
The people of Israel lost their saltiness when they
abandoned the covenant.
Christians lose theirs when we place other
priorities ahead of Christ; when the life of the Church becomes optional; when
receiving Christ in the Eucharist becomes something we can take or leave; when
prayer dries up; when charity grows cold and we lose our connection with e
Communion of Saints.
Salt only makes sense as salt when it is salty.
Likewise, human beings only make sense when our
lives are shaped after Jesus Christ, the true Light of the World.
And this brings us to the second image Jesus gives
us: you are the light of the world.
Just as salt is pointless without its distinctive
properties, so light is pointless if hidden under a basket.
Light is meant to shine, to reveal, to guide, to
warm.
What a remarkable assertion this is.
Jesus, who says of himself, I am the light of the
world, also says to us, you are the light of the world.
Our light is not our own.
As the moon reflects the light of the sun, so we
reflect the radiance of Christ.
Without him our lives are dim and cold.
True enlightenment is not found in human-centred
philosophies but in turning toward the God-Man, Jesus Christ, the fullest
expression of what it means to be human.
As St Paul reminds us, our faith does not rest “in
the wisdom of men but in the power of God.”
When Christ is placed on the lampstand of our
hearts, we cannot help but shine.
Our good works—our acts of mercy, justice,
compassion, and faithfulness—become windows through which others glimpse the
glory of God.
Jesus’ image of a city set on a hill would have
immediately evoked Jerusalem.
Approaching it from the Jordan Valley at sunset,
pilgrims could see its lights from afar.
They lifted their eyes to the hills and sang, “from
whence cometh my help?”—knowing that their help came not from the earthly city
but from the Lord, the maker of heaven and earth.
Jerusalem was a city of light, its Temple
illuminated by golden lampstands.
Yet even that city fell into darkness when the
powers of this world sought to extinguish the Light of the World.
But the light could not be overcome.
The One who was present when God said, ‘Let there be
light,’ (Genesis 1.1) shines even through death and into our hearts.
It is into this radiant mystery that N is
baptised today.
She is sealed with Christ’s light and seasoned with
his salt.
And we, with her, are called again to be what Jesus
declares us to be: the salt of the earth and the light of the world.
May we draw out the flavours of the Kingdom,
preserve what is holy, and shine with the light that leads others to the
Father. Amen.