Such is the danger of using idioms, especially when we communicate cross-culturally. However, the ability to be in someone else's shoes is truly a unique gift from God to us.
Time and time again, Christ taught the disciples the important lesson of wearing His shoes:
Jesus called his disciples to him and said, "I have compassion for these people; they have already been with me three days and have nothing to eat. I do not want to send them away hungry, or they may collapse on the way." His disciples answered, "Where could we get enough bread in this remote place to feed such a crowd?" (Matthew 15:32-33 NIV)
It is always easier to look away and even become selectively blind to the needs of those around us. Wearing Jesus' sandals will help me know and anticipate the needs of others who were previously invisible to me. Having the compassion of Christ should not be only a Christian idiom, it also must be our way of life.