We know that each one of the daily prayers (Shacharis, Mincha, Ma’ariv) has its unique strength.
Which prayer has the power to be answered immediately?
Mincha. Chazal tell us that the prayer that Yitzchok Avinu went out to pray in the field (in this week’s parsha), was tefillas Mincha. The Kli Yakar points out that from that episode in the parsha we see that Mincha is a very powerful prayer. He comments that in that tefilla, Yitzchok Avinu asked Hashem to help him find his zivug. Right afterwards, the Torah says “He (Yitzchok) lifted his eyes (after he completed his tefilla); and behold, camels were coming.” Riding on one of those camels was Rivka – Yitzchok’s zivug. We see from here that Hashem answered Yitzchok Avinu’s Mincha prayer immediately! Since ma’ase avos siman l’bonim, this relates to us also: Mincha has the power to be answered immediately!
Menucha