To invest in Justice is to invest in the Gospel!
Why is this? The answer is simple, take a look:

For in it the Righteousness of God is revealed from faith to faith; as it is written, “The just shall live by faith.” Romans 1.17

When a person voluntarily places all their strength on the Altar, whether it is by paying their tithes or through righteous offerings, Divine Justice accompanies them regardless of their past, because a Righteous Judge always considers a person’s present, never their past.

In whose testimony did we witness this? Mary Magdalene!
Certainly, you have heard of her story. The Justice of God in her life began when He cast out seven demons from her.

Now it came to pass, afterward, that He went through every city and village, preaching and bringing the glad tidings of the kingdom of God. And the twelve were with Him, and certain women who had been healed of evil spirits and infirmities— Mary called Magdalene, out of whom had come seven demons. Luke 8.1-2

From then on, we see the righteous fruit of this investment, because when the Lord Jesus rose, who did He appear to first? This is glorious!

Now when He rose early on the first day of the week, He appeared first to Mary Magdalene, out of whom He had cast out seven demons. Mark 16.9

Was investing in Justice (Gospel) worth it or not?

God bless you greatly!