Does the adjective 'good' justifies its meaning in 'Good Friday'?

Question

I'm putting this as a separate question though I already asked it here. That's because either I will learn more about using the adjective good or I'll know more about how a phrasal noun which refers to some grief takes a positive adjective?

What is good in Good Friday? An adjective, isn't it? But then if it's really good, how does it justify its meaning? As Good Friday is certainly a very sad day to lose such a person of God. Where's the goodness in that? Is there any positive adjective that's used this way forming a noun-phrase which actually means exactly opposite to that (A bad Friday?, indeed a bad day as we lost him). I'm choosing the tag 'Word Choice' here.

Answer 1

Although the origin of Good Friday is contested, the phrase can mean Holy Friday.

• Etymology of "Good Friday"

  _{From Oxford Dictionary}

  from good, in the sense 'holy, observed as a holy day'.

• "Good" can mean Holy.

  _{From Wiktionary; sense 5}

  (especially when capitalized) Holy.

_{For a religious answer: the same question on Christianity.SE.}

Answer 2

I had always been perplexed as to why the day commemorating the worst day in recorded history would be qualified as good. But synonyms of good are virtuous, righteous, or commendable. Good Friday is the day Christ submitted to the will of God to be crucified. So, good refers to the virtues of Christ, not the day. Still, I think the Holiday should be renamed.