And stand (kai stathentes). First aorist passive participle (intransitive, ingressive aorist), take a stand. Bold and pictorial command.
All the words of this life (panta ta rhēmata tēs zōēs tautēs). Not just a Hebraism for “all these words of life.” Probably “this life” which the Sadducees deny and of which the angel is now speaking, this eternal life. (Joh 6:63, Joh 6:68; 1Co 15:19).