[jude24]

You will not find a verse in scripture that says man was created for purpose of God showing His goodness.

Ps. 145:7 is kinda hard to explain in that light.

[HarleyD]

Psa 145:7 They shall eagerly utter the memory of Your abundant goodness And will shout joyfully of Your righteousness.

I see nothing in Psa 145:7 that contradict anything. This does not say the purpose of man is so that God can pour forth His goodness. God was already good.