But Saul increased the more in strength,.... Not of body, but of mind; his gifts and graces, and spiritual light and knowledge increased; his abilities were greater; his fortitude of mind, boldness, and freedom of speech, every day increased: he got more, and new, and fresh arguments, by which he himself was confirmed, and he confirmed others in the truths of Christ.
Some copies read, "he was more strengthened in the word"; either in the word of God, having a clearer understanding, and being more confirmed in the truth of it; or in speech, being more ready and powerful in speaking it.