The washing of feet was an example of an action of Christ, when he washed his disciples feet in John 13. In reality it is showing that Christ would wash us clean of sins with his precious blood that was to be shed upon the cross. This action was symbolic, but no harm comes from the actual washing of feet or any other part of the body. But, there is only one cleansing that can save our souls, that of the remission of sins through the sacrifice of the Passover lamb, Jesus Christ.
John 13:1Now before the feast of the passover, when Jesus knew that his hour was come that he should depart out of this world unto the Father, having loved his own which were in the world, he loved them unto the end. 2And supper being ended, the devil having now put into the heart of Judas Iscariot, Simon’s son, to betray him; 3Jesus knowing that the Father had given all things into his hands, and that he was come from God, and went to God; 4He riseth from supper, and laid aside his garments; and took a towel, and girded himself.
5After that he poureth water into a bason, and began to wash the disciples’ feet, and to wipe them with the towel wherewith he was girded. 6Then cometh he to Simon Peter: and Peter saith unto him, Lord, dost thou wash my feet? 7Jesus answered and said unto him, What I do thou knowest not now; but thou shalt know hereafter. 8Peter saith unto him, Thou shalt never wash my feet. Jesus answered him, If I wash thee not, thou hast no part with me. 9Simon Peter saith unto him, Lord, not my feet only, but also my hands and my head. 10Jesus saith to him, He that is washed needeth not save to wash his feet, but is clean every whit: and ye are clean, but not all. 11For he knew who should betray him; therefore said he, Ye are not all clean.
12So after he had washed their feet, and had taken his garments, and was set down again, he said unto them, Know ye what I have done to you? 13Ye call me Master and Lord: and ye say well; for so I am. 14If I then, your Lord and Master, have washed your feet; ye also ought to wash one another’s feet. 15For I have given you an example, that ye should do as I have done to you. 16Verily, verily, I say unto you, The servant is not greater than his lord; neither he that is sent greater than he that sent him. 17If ye know these things, happy are ye if ye do them.
Luke 21:15 For I will give you a mouth and wisdom, which all your adversaries shall not be able to gainsay nor resist.