Charles Ellicott Commentary Deuteronomy 11:8

"Therefore shall ye keep all the commandment which I command thee this day, that ye may be strong, and go in and possess the land, whither ye go over to possess it;" — Deuteronomy 11:8 (ASV)

The commandments. — Literally, the commandment. It is one course of action rather than many details which is enjoined.

Go in and possess — i.e., complete the conquest in detail, so as to enjoy the whole profit of the land.