Ivanhoe, page 25

"You do me injustice," exclaimed the Templar, fervently; "I swear to you by the name which I bear - by the cross on my bosom - by the sword on my side - by the ancient crest of my fathers do I swear, I will do thee no injury whatsoever! If not for thyself, yet for thy father´s sake forbear! I will be his friend, and in this castle he will need a powerful one."
"Alas!" said Rebecca, "I know it but too well. Dare I trust thee?"
"May my arms be reversed and my name dishonoured," said Brian de Bois-Guilbert, "if thou shalt have reason to complain of me! Many a law, many a commandment have I broken, but my word never."