John Gill Commentary Deuteronomy 11:22

"For if ye shall diligently keep all this commandment which I command you, to do it, to love Jehovah your God, to walk in all his ways, and to cleave unto him;" — Deuteronomy 11:22 (ASV)

For if you shall diligently keep all these commandments which
I command you to do them
Observe and take notice of them, even all of them, and so as not merely to have a theory or notional knowledge of them, but to put them in practice:

to love the Lord your God ;
and show it by obeying his commands, and which is the end of the commandment, and the principle from which all obedience should flow:

to walk in all his ways, and to cleave unto him ;
see (Deuteronomy 10:12Deuteronomy 10:20) .