'Command' in the Bible

I rejoiced exceedingly that I have found of thy children walking in truth, even as a command we did receive from the Father;

and now I beseech thee, Kyria, not as writing to thee a new command, but which we had from the beginning, that we may love one another,

and this is the love, that we may walk according to His commands; this is the command, even as ye did hear from the beginning, that in it ye may walk,