What do the signers pledge to do at the end of the decleration of independence

Answer: The final sentence of the Declaration of Independence is a promise among thesigners, to "mutually pledge to each other our Lives, our Fortunes, and our Sacred Honor," and many of them and their fellow patriots did in fact sacrifice their lives and fortunes in service to our country. Oct 14, 2016

"mutually pledge to each other our Lives, our Fortunes, and our Sacred Honor"