“And it was so, that when he had turned his back to go from Samuel, God gave him another heart: and all those signs came to pass that day.”
King James Version (KJV)
Matthew Henry's Concise Commentary
10:9-16 The signs Samuel had given Saul, came to pass punctually; he found that God had given him another heart, another disposition of mind. Yet let not an outward show of devotion, and a sudden change for the present, be too much relied on; Saul among the prophets was Saul still. His being anointed was kept private. He leaves it to God to carry on his own work by Samuel, and sits still, to see how the matter will fall.
“Jehoahaz was twenty and three years old when he began to reign; and he reigned three months in Jerusalem. And his mother's name was Hamutal, the daughter of Jeremiah of Libnah.”