At Against Heresies, LIBERALISM is defined as…
The movement away from:
[a] the person and work of Christ in the gospel message
[b] toward the ethical demands of his teaching.
The replacement of:
[a] “the gospel about Jesus” with
[b] the message of Jesus.
The former [a]:
includes Christ’s redemptive work and his teaching (he is after all Saviour and Lord, Prophet, Priest and King).
The latter [b]:
however, has no real place for Christ’s redemptive significance beyond the moral influence he exerts.
In any this case this has become the thing of first importance in the message. Even when redemptive language is retained it has become largely redundant, ill-fitting Scriptural phrases draped over another Jesus.
Summed up in Machen’s words:
Liberalism = operates altogether in the imperative mood
Christianity = begins with a triumphant indicative
Liberalism = an appeal to man’s will
Christianity = firstly, announces, a gracious act of God.