Does the Bible Really Teach the Perseverance of the Saints?

Herman Bavinck:

Whatever apostasy occurs in Christianity, it may never prompt us to question the unchanging faithfulness of God, the certainty of his counsel, the enduring character of his covenant, or the trustworthiness of his promises. One should sooner abandon all creatures than fail to trust his word. And that word in its totality is one immensely rich promise to the heirs of the kingdom.

It is not just a handful of texts that teach the perseverance of the saints: the entire gospel...