what Jesus was showing them how faith works .command it and it will happen if only your faith do not go down.

secondly any thing which is not useful in our life should be cast away.

Jesus serve when He was on earth by doing the will of the Father, forgiving the sinners,healing the sick, raising the dead and to crown it all He washed the feet of His disciples.

He is still serving now by been there always for us by the right hand of His Father interceeding on our behalf and also He is our advocate. Praise God