A deep bond of loyalty is sealed through a solemn oath, cementing a profound pact between two devoted friends. Jonathan commits not only to warning David of impending danger but also openly acknowledges David's bright future as the leader of Israel, completely accepting the divine plan. He binds himself to this promise using a traditional oath format. In this style of swearing, a person avoids detailing the severe punishment they would suffer for breaking their word. Instead, the phrasing acts as a request that God grant him great favor and continue to do so, provided he remains true to his promise [מצודת דוד].
The focus of this oath is the looming threat from King Saul. The primary approach among commentators is that Jonathan is preparing for the grim possibility that his father has firmly decided to harm David. However, another perspective suggests that Jonathan is planning a more active strategy. He intends to deliberately speak poorly of David in front of his father to test the king's reaction. If Saul is pleased by the negative remarks, it will serve as clear proof of his deep hatred [מלבי״ם].
If the danger is confirmed, Jonathan promises to alert David immediately. Even though delivering bad news is emotionally difficult, Jonathan commits to doing so because urging David to flee is the only way to save his life [מצודת דוד]. This promise is paired with strict security measures. To ensure David's safety, Jonathan will not rely on a messenger, fearing that Saul might find out and uncover David's hiding spot. Instead, Jonathan vows to come in person to deliver the warning [רש״י ומלבי״ם].
The climax of Jonathan's message is a powerful blessing for David's future. He prays that God will guide David in his royal duties and help him defeat his enemies, exactly as God supported Saul at the beginning of his rule [רד״ק]. With this blessing, Jonathan makes a striking declaration. Even though God has chosen David to take the throne instead of his own father, Jonathan is entirely at peace with this reality. He promises to send David away in safety, fully knowing and accepting that David will ultimately be king [מלבי״ם ומצודת דוד].