Matthew 25:30 describes a worthless servant thrown outside — echoing the fate of salt that loses its saltiness and is thrown out.

Mark 9:50 gives the same warning about salt losing its taste, adding 'have salt among yourselves' — a direct parallel to the salt metaphor.

In Luke 14:34, the identical saying about salt losing its saltiness confirms this teaching across Gospels.

Luke 14:35 continues, describing salt's worthlessness for soil or manure — the same uselessness as being thrown out.

In Colossians 4:6, Paul uses the same salt metaphor for gracious speech—applying Jesus' salt-of-the-earth concept to conversation.

Ezekiel 15:3 asks if vine wood is useful for anything — same logic as salt that is good for nothing but being thrown out.

In Leviticus 2:13, salt symbolizes the enduring covenant—providing OT background that deepens Jesus' metaphor of disciples as salt.

Ezekiel 43:24 prescribes salt on offerings — in Matthew 5:13, disciples as 'salt of the earth' echo this preserving role.

Ecclesiastes 10:1 compares dead flies spoiling ointment to folly ruining honor — a parallel to a little corruption spoiling something good.

Jeremiah 6:30 calls Israel 'rejected silver' because God rejects them — thematically parallel to salt being thrown out as worthless.

In Mark 9:49, 'salted with fire' extends the salt metaphor to purification through judgment, linking saltiness to disciple testing.

Hebrews 6:4-6 warns of those who fall away after tasting grace — thematically parallel to salt losing its essential nature and being discarded.

2 Peter 2:20 describes those who escape corruption but are entangled again — a parallel apostasy warning like salt becoming worthless.

2 Peter 2:21 adds that knowing the way then turning back is worse — echoing the irreversibility of salt's loss.

Jeremiah 24:2 depicts worthless figs — paralleling salt that loses its saltiness and is thrown out as useless.