God bless. To add to what the Christ (Jesus) said in Matthew 5:48.
"You, therefore, must be perfect, as your heavenly Father is perfect.”
First, let's remove the negatives and state definitions.
What is perfection? Because I know I'm far from attaining that, having a physical condition and not being necessarily attractive. I cannot keep up with military (soldiers) or their demands for physical prowess. I am not 250 pounds of sheer muscle. I am not attractive. I am not an Olympic athlete not an artist. I can go on, but now I've just depressed myself. lol
So what is perfection? Is it to be sinless? Indeed. And only One is sinless and Holy. Therefore, immediately, the bar is impossible, and truly impossible to attain. However, it's also clear that the context implied is also incorrect here. What IS meant, is the action to which it is attributed (to the Father). Even the Christ (Jesus) said: (Mark 10:18 / Luke 18:19)
"Why do you call me good?" "No one is good--except God alone."
Though, He did not say "perfect", but "good".
Therefore, what is meant is the ACTIONS (and obviously grace) the Father is presenting. In context, to Loving our enemies, is indeed acting perfectly because there is no higher ACTION to be presented. What can be higher than loving those that hate and persecute you? There is nothing conceivable. Indeed, it is sacrificial. What we sacrifice, through selflessness, is a striving and effort towards what the Father sees as "perfect".
Is it possible / probable to be perfect always?
And what about in the hereafter, when there are no more enemies? Is it still possible to attain this "perfection" by loving out enemies (that no longer exist)?