RobH_en_tn/1ki/09/04.md

if you walk before me as David your father walked

The way a person lives is spoken of as if that person were walking on a path. AT: "if you live the way I want you to live, just as David your father did" (See: rc://en/ta/man/translate/figs-metaphor)

in integrity of heart and in uprightness

These two phrases mean basically the same thing and emphasize how righteous David was. (See: rc://en/ta/man/translate/figs-doublet)