Believing right doctrine?
From Spurgeon's, THE BED AND ITS COVERING
You may as easily be destroyed by 'trusting
in good doctrine' as by trusting in good works.
The only salvation that will stand the test of the day
of judgment, is believing in the Lord Jesus Christ,
and receiving his Spirit, and being made like him.
There are some who have no marks of the Spirit;
who have no evidence of piety;
who are not holy;
who live in sin;
who can live as sinners live;
who have the image of the devil upon them,
and yet they think they are the children of God!
Believing right doctrine will no more save you,
than doing good works will save you.