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扫罗王想杀大卫，大卫以为是他自己犯了错。他也不知道自己有没有得罪了王呢？难道他做事不尽责或曾在扫罗面前表示对他不忠心吗？大卫不明白扫罗为什么对他怀怨。

尽管扫罗曾几次尝试杀害他，但大卫仍然忠心服侍这位君王。难怪大卫如此困惑和苦恼了。

这时约拿单也感到困惑，可能因为他本以为扫罗会遵守誓言不杀大卫，（参撒上 19:6-7）约拿单似乎未料想扫罗又再次尝试杀害大卫和追杀他，（参撒上 19:10、15）然而大卫却这样说：“我指着永生的耶和华，又敢在你面前起誓，我离死不过一步。”（参撒上 20:3）

一切都与约拿单的回应密切相关。如果大卫不能信任约拿单，大卫将会完全无助和失去一切保护。但是约拿单不以自私的野心为出发点，现在他知道他不能相信他父亲的承诺。约拿单便满怀爱心地对大卫说：“你心里所求的，我必为你成就。”（参撒上 20:4）

就是这样，约拿单改变立场站到大卫的立场，他与大卫结盟并承诺忠于彼此的友情，他们也求神作他们的见证人。

David thought it might have been his fault that King Saul was trying to kill him. Did he offend the king unknowingly? Did he not fulfill his duties or make a disloyal gesture in Saul’s presence? David could not figure out why Saul was against him.

David had tried to serve the king faithfully, even though Saul had tried to kill him several times. No wonder David was confused and upset.

Jonathan was also confused at this point, probably thinking that Saul had kept his vow not to kill David (see 1 Samuel 19:6-7). Jonathan didn’t seem to realize that Saul had again tried to kill David and to hunt him down (19:10, 15). But David said, “As surely as the LORD lives and as you live, there is only a step between me and death.”

Everything hinged on Jonathan’s response. David would have been completely vulnerable and exposed if he could not trust Jonathan. But Jonathan was not motivated by his own ambitions. He realized now that he could not trust his father. And with a heart of love, Jonathan said to David, “Whatever you want me to do, I’ll do for you.”

In this way Jonathan changed sides. And he and David pledged their friendship to one another, calling upon God as their witness.