I give you my word of honour I won't tell your secret.

我以名誉向你保证不说出你的秘密。

I'll be good to you always, I give you my word of honour.

我将永远对你好，我用我的名誉担保。

Either you come aboard along of us, once the treasure shipped, and then I'll give you my affy-davy, upon my word of honour, to clap you somewhere safe ashore.

或者，在财宝装上船后，你们和我们一起上船，然后我可以担保，以我的名誉担保，我将让你们在某个地方安全上岸。