God’s promises do not have to be inevitable to be certain
The only thing I might add to this good topical sermon by Tom Moore is a bit more on the Holy Spirit, but that's a judgment call in terms of direction to take when preaching. The title pulls it together, a quote from 1 Pet. 1:5, "kept by the power of God through faith," and since the Petrine epistles are my favorites, I would have liked to have seen a treatment of that phrase, but hey, it's a topical sermon, so now I'm just bellyaching. Near the end, his list of seven activities that contribute toward faithfulness is good, one we need to heed often and well.