Yep He can do anything. But when relationships are involved obviously the other person is part of it.
Forgiving people does not require a reciprocal relationship.
When somebody do wrong to you, there needs to be a punishment. To do this you need the power. So you get angry or irritated or whatever. Now this problem is solved. No more need for this action and thus no more of these emotions/spirits to have an effect anymore. Meaning we can now live as He Live . . .only with love for one another no matter that person's actions. No matter he/she is good or bad towards you. It will no longer have an effect on you. You will always love everybody.
You have a very skewed way of looking at relationships.
Punishment, or the ability to inflict the same, is not a prerequisite of dealing with people.
It is not a part of the Christ story either.
He sacrificed for Himself and us. He wanted to love us always. He didn't want to live in a situation to be angry or irritated because of our actions towards Him. And we needed the same.
Who did He sacrifice Himself to? If he wanted to love his creation, then he simply could have, with no requirement for the crucifixion. He chose to let himself be angry or irritated with his creation.
This one is godly forgiveness. On a godly standard. Thus a higher standard.
Forgive: a. To give up resentment of or claim to requital
b. To grant relief from payment of a debt
c. To cease to feel resentment against an offender.
Doesn't look like there is a difference between a deity forgiving someone and person doing it.
Meaning you are forgiven irrelevant how you act. Good or bad. You are forgiven and loved. No more bad feelings. No matter whosoever do whatsoever to you. Meaning God and you can live your lives now in permanent love to everybody . . "also those that kill your family" . . your enemy will have your love.
And someone would be as able to do this without the alleged sacrifice of a Middle Eastern deity, as they would be able to achieve wisdom without the sacrifice of the leader of the Norse pantheon to himself by hanging himself on the World Tree.
Forgiveness God needed it and so do you. Relationships can not be forced with "God's power". To change us by force is not love. To walk the way with us is till we see and accept voluntarily . . that is love. Then we change because we want to.
Why did an omnipotent being require the sacrifice of himself to himself to forgive the people who break his laws? Forgiveness is a voluntary act by the offended party. It requires no effort at all by the offending party.
Ambivalence,
Border Reiver