Note 88 at Jn. 16:24: The proper way to pray is to the Father in the name of Jesus. While Jesus was on the earth, the disciples asked Jesus for whatever they needed and Jesus would ask the Father and get it for them. Now He is saying that they should not ask Him anymore but they should bring their requests directly to the Father.

Note 89 at Jn. 16:24: Asking in the name of Jesus means that God treats our requests the same as He would as if Jesus was personally making the petition. Therefore, we can expect the same treatment from God as Jesus would get. In the business world that is called power of attorney.

A person who prays in the name of Jesus, but then doubts that God would answer his prayers because he isn't holy enough, is taking the name of Jesus in vain. If we pray in Jesus' name, then it is His holiness that God looks at and not ours.