Meta. That phase of our understanding which comes into contact with substance. Consequently we can take possession of all substance that we comprehend and understand, in the name of I AM. This is the meaning of Joshua 1:3: "Every place that the sole of your foot shall tread upon, to you have I given it, as I spake unto Moses."
The feet are the most willing and patient servants of the body. They go all day at the bidding of the mind, and upon them rests the burden of the thought of materiality. The more we believe in matter, the greater the burden laid upon the feet and the more tired they become.
The denial of materiality is illustrated in the washing of the disciples' feet by Jesus (John 13:5-10). Even Peter, spiritual faith, must be cleansed from belief in the reality of material conditions. To wash the feet seems a menial thing, but in this humble way Jesus taught and exemplified the willingness of divine love to serve, that man may be redeemed from the pride of the flesh.
There had been contention among the disciples as to who should sit at the Master's right, and who at His left, in the kingdom. Jesus was putting an end to this strife by bringing home to His followers the truth that he who willingly performs lowly, humble service for others, with no thought for personal distinction, is greatest in God's kingdom.
Jesus signifies the I AM, and the feet represent that phase of the understanding which connects one with the outer, or manifest, world and reveals the right relationship toward worldly conditions in general. The washing of the disciples' feet by Jesus therefore typifies a cleansing process, or a denial of personality and materiality.