sure ground

However that may be, the governor, thinking himself upon sure ground, resolved to put the preservation of the Mass to the vote.

It is not by any gratuitous assumption that we maintain this, but on the sure ground of strong scriptural testimony.

This clear and strong conception of Nature gives him a sure ground for dealing with antagonists.

But he had no sure ground for his suspicions; besides, sent by the State, the man was most probably what he seemed.

Without a sure ground of confidence in Divine support, he would have been foolhardy in the extreme.