Faced with a demanding and unusual condition for marriage into the royal family, David responds with striking determination and confidence. His willingness to accept the challenge of gathering enemy foreskins is understood in several ways. On a basic level, he simply agreed to the terms to secure the marriage [מצודת דוד]. Others point out that such a task was not considered a proper or standard method of warfare; he only accepted the unconventional mission because of the ultimate prize of becoming the king's son-in-law [מלבי״ם]. On a deeper spiritual level, his readiness to face the danger was a profound expression of trust in God. By accepting the challenge, he aimed to prove to King Saul that God was with him and actively ensuring his success [רלב״ג].
King Saul had set a specific time limit for the completion of this task. Yet, David did not wait for the allotted period to run its course [מצודת ציון]. He acted with great speed, finishing the mission well before the deadline. Going far beyond what was asked of him, he brought back two hundred foreskins instead of the demanded one hundred, using this overwhelming victory to clearly show his extraordinary success in battle [רלב״ג, רד״ק].