The construction of this sentence is interesting. It begins with a reference to Lehi "And it came to pass that he did inquire...", but follows this clause immediately with the possibly causitive "for they...." It is most likely that Lehi's inquiry of the Lord was most directly related to his own recall to humility, but it is interesting that the humbling of the brothers may have also created a more favorable atmosphere for the prophetic communication.
It is not far beyond our experience that our own ability to feel the influence of the Spirit is often related to the circumstances we are in, and when we are among others who are receptive to the Spirit, it is easier for us to be.