Acts 3:6

But Peter said, Silver and gold have I none; but what I have, that give I thee. In the name of Jesus Christ of Nazareth, walk.

Silver and gold have I none ... This clause is not strictly grammatical; and as Campbell noted:

However use may have sanctioned it, this cannot be justified. "None" is an abbreviation of "not one," which does not apply to these metals named ... "Silver and gold I have not" was strictly true, and more eloquent.[6]

The legendary story of Thomas Aquinas and Pope Innocent II comes to mind in connection with this verse. Aquinas surprised the Pope and came upon him while he was counting great stacks of silver and gold coins, whereupon the Pope said,

"Brother, you see that Peter can no longer say, `Silver and gold have I none.'"

Aquinas replied, "Quite true; and neither can he say to the lame man, `Rise and walk!'"

In the name of Jesus Christ of Nazareth, walk ... This means "by the authority of" Christ, showing that Peter and John were acting in a manner consonant with Christ's will, as being in him and identified with him. There does not exist any other authority in the Christian religion; all things are to be done by the authority of Christ. Even the baptismal ceremony (Matthew 28:18-20) is not "in the name of" the Father, and the Son, and the Holy Spirit, but "into" that triple name, but still done by the authority of Christ.