'Constancy' in the Bible

And in no way be alarmed or intimidated [in anything] by your opponents, for such [constancy and fearlessness on your part] is a [clear] sign [a proof and a seal] for them of [their impending] destruction, but [a clear sign] for you of deliverance and salvation, and that too, from God.

remembering unceasingly your work of faith, and labour of love, and enduring constancy of hope, of our Lord Jesus Christ, before our God and Father;