Why?
Because there is “no love without obedience”.

How?
How “much we obey”, that’s “how much we Love Him”.

Proof verse?

“If you love Me, you will keep My commandments.” – Lord Jesus Christ in (John 14:15)

P/S:

That’s why obedience to His Word (verses) is the greatest proof of our Love toward Him.

Those who “disobey” His Word love ‘others’ or ‘other things’ more than Him ‘obeying their words’ instead where these words are “against/opposite” the Word of God.

The rule is the same for everyone including me.

We may lay down the Biblical facts but only God judges perfectly (know early, act wisely).