(21) And they prophesied likewise.—Bishop Wordsworth calls attention here to the fact of “this portion of Scripture, from 1Samuel 19:18 to end of the chapter, which relates the illapse of the Spirit on Saul’s messengers, and even on Saul himself, the persecutor of David, being appointed by the Church to be read on Whitsun Tuesday (Old Lect.), in order to show the existence and working of the Holy Spirit before the times of the Gospel, and the freedom and power of His Divine agency.” (Comp. here Numbers 11:26-31 : the history of Eldad and Medad, which we read on Whitsun Monday, New Lect.)

1 Samuel 19:21-23. He sent other messengers — Strange obstinacy, to contend so long with the Spirit of God. And they prophesied likewise — That is, they joined with the rest in praising God. “Instead,” says Henry, “of seizing David, they were themselves seized.” Thus God again secured David, put an honour on the sons and school of the prophets, and manifested his power over the spirits of men. The Spirit of God was upon him also — It came upon him in the way; whereas it came not upon his messengers till they came to the place. Hereby God would convince Saul of the vanity of his designs against David, and that in them he fought against God himself.

19:11-24 Michal's stratagem to gain time till David got to a distance was allowable, but her falsehood had not even the plea of necessity to excuse it, and manifests that she was not influenced by the same spirit of piety which had dictated Jonathan's language to Saul. In flying to Samuel, David made God his refuge. Samuel, as a prophet, was best able to advise him what to do in this day of distress. He met with little rest or satisfaction in Saul's court, therefore went to seek it in Samuel's church. What little pleasure is to be had in this world, those have who live a life of communion with God; to that David returned in the time of trouble. So impatient was Saul after David's blood, so restless against him, that although baffled by one providence after another, he could not see that David was under the special protection of God. And when God will take this way to protect David, even Saul prophesies. Many have great gifts, yet no grace; they may prophesy in Christ's name, yet are disowned by him. Let us daily seek for renewing grace, which shall be in us as a well of water springing up into everlasting life. Let us cleave to truth and holiness with full purpose of heart. In every danger and trouble, let us seek protection, comfort, and direction in God's ordinances.Samuel standing as appointed - Rather, "as Overseer, or leader." 1Sa 19:18-23. David Flees to Samuel.

18-23. David fled, … and came to Samuel to Ramah—Samuel was living in great retirement, superintending the school of the prophets, established in the little hamlet of Naioth, in the neighborhood of Ramah. It was a retreat congenial to the mind of David; but Saul, having found out his asylum, sent three successive bodies of men to apprehend him. The character of the place and the influence of the sacred exercises produced such an effect on them that they were incapable of discharging their commission, and were led, by a resistless impulse, to join in singing the praises of God. Saul, in a fit of rage and disappointment, determined to go himself. But, before reaching the spot, his mental susceptibilities were roused even more than his messengers, and he was found, before long, swelling the ranks of the young prophets. This singular change can be ascribed only to the power of Him who can turn the hearts of men even as the rivers of water.

No text from Poole on this verse.

And when it was told Saul,.... That the messengers he had sent, instead of seizing on David, were prophesying of him, or however were attending to services of a different nature than what they were sent upon:

he sent other messengers, and they prophesied likewise; when they came to the same place:

and Saul sent messengers again a third time, and they prophesied also; joined the rest in singing praises, or foretelling future events.

And when it was told Saul, he sent other messengers, and they prophesied likewise. And Saul sent messengers again the third time, and they prophesied also.