The view of justice we have is defined as obeying the will of God. Even a cursory reading of the Book of Confessions will show that the opposite of justice ultimately is not simply injustice, but quite literally sin. Sin is the violation of God's will as revealed in Scripture. The Reformed confessions following Scripture would never grant that pursuing justice as defined as following the revealed will of God is onerous or unpleasant. Quite the opposite.
Sin leads to pain, misery and suffering.
The Reformed view of the covenant underlies our understanding of all relationships. Again, this concept is derived from Scripture. The covenant relationship is based on the twin concepts of commitment and service. These standards cannot be applied to just any relationship. They are commitment and service as biblical ideals, spelled out in Scripture.