As they passed by in the morning (paraporeuomenoi prwi). Literally, passing by in the morning. The next morning. They went back by the lower road up the Mount of Olives and came down each morning by the steep and more direct way. Hence they saw it. Matthew 21:20 does not separate the two mornings as Mark does. From the roots (ek rizwn). Mark alone gives this detail with exhrammenhn perfect passive predicate participle from xhrainw.