My daughter and I have the same size foot, and occasionally she borrows my shoes and I hers.

On one such occasion, I noticed that I was having trouble standing in the shoes I borrowed. I took them off, and to my surprise, the entire heal was gone.

The Lord gives us shoes to put on, “and having shod your feet with the preparation of the gospel of peace;” Ephesians 6:15 NKJV

And directions for using the shoes, “Be on your guard; stand firm in the faith; be courageous; be strong. Do everything in love. 1 corinthians 16:13-14 NKJV