Rashi explains that Eliezer had a daughter whom he would have liked to see married to Yitzchak Avinu. Thus, he had a vested interest in the success or failure of his mission. Failure meant that Yitzchak might become his son-in-law. This could create pressure on even the most objective mind. The commentators wonder why, specifically at this point, when the shidduch has been successfully concluded, that Rashi mentions Eliezer’s personal negios, vested interests, rather than doing so earlier, when Avraham Avinu had originally sent him on the mission. The accepted explanation rendered by the Rishonim is that Eliezer was well…