en_tn/1sa/13/13.md

the command of Yahweh your God that he commanded you

This may sound better in your language: "the command of Yahweh your God that he gave you."

You have not kept the command of Yahweh

Saul was to wait for Samuel to come and sacrifice the burnt offering to God. He was not to perform the sacrifice himself.

established your rule

"set up your rule" or "authorized your rule" or "appointed your rule"