If, for example, the trumpet makes an unclear sound, who will get ready for battle?

It is similar for lifeless things that make a sound, like a flute or harp. Unless they make a distinction in the notes, how can what is played on the flute or harp be understood?

I pray that according to the wealth of his glory he may grant you to be strengthened with power through his Spirit in the inner person,

You must let no unwholesome word come out of your mouth, but only what is beneficial for the building up of the one in need, that it may give grace to those who hear.

Some thought that, because Judas had the money box, Jesus was telling him to buy whatever they needed for the feast, or to give something to the poor.)

You did not choose me, but I chose you and appointed you to go and bear fruit, fruit that remains, so that whatever you ask the Father in my name he will give you.