1699 W. Bates vii. 172 They are satisfied with a speculative Faith, that costs nothing, and will go with them to Hell, for the Devils believe supernatural Truths.
1771 J. Wesley (1872) V. 213 It is not a barely notional or speculative faith.
2000 J. P. Dougherty iv. 51 Changing moral faith into speculative faith and dogma.