"We came unto the land whither thou sentest us … we saw the children of Anak there." (Num. 13:27, 28)
It is when we are in the way of duty that we find giants. It was when Israel was going forward that the giants appeared. When they turned back into the wilderness they found none.
Source: Hardman, S. G., & Moody, D. L. (1997). Thoughts for the quiet hour. Willow Grove, PA: Woodlawn Electronic Publishing.