John Gill Commentary Psalms 139:22

"I hate them with perfect hatred: They are become mine enemies." — Psalms 139:22 (ASV)

I hate them with perfect hatred
Heartily and really; not in word only, but in deed and in truth; "odio vatiniano", with consummate hatred: this is an answer to his own question;

I count them mine enemies ;
being the enemies of God: the friends of God were David's friends, as angels and good men, and God's enemies were his; their friends and enemies, were common; so closely allied and attached were they to each other, as God and all good men are.