Hey you,
@Cis.jd. Hope you are doing well. Why do we need to be moral?
You asking this question leads me to believe to some degree as human beings we have free will and choices to make in life.
We have these choices which comes by our flesh: murder, steal, lie, cheat, manipulate, hate, disobedience state regulated laws, envy, wrath, strife, drunkeness, revellings, fighting, lasciviousness, adultery, greed, and some more just like this.
As humans when we look others in the nature of our flesh, see many of these things as wrong, that we shouldn't be hating, murdering, lying to each other, stealing, manipulating others. They are looked as unmoral.
What is interesting however, is that Jesus Christ paid for all of these sins.
When we look at God, and what he did by sending Yeshua/Jesus to come down from being the Word of God, and live a life on this earth. We see Yeshua/Jesus teach on fundamentally life itself.
From what do you do when you see a person laying in the street that may be dead? Do you walk past them, and no care, or do you try to see what is wrong and help if it were possible. You can even say maybe the man is holding with every strength he has off the edge of a mountain, and there are people walking by while he is screaming for help.
There are teachings about loving your enemy, and your neighbor as yourself, teachings of prayer, resurrection, the spirit, and the Kingdom of God.
Looking at Jesus/Yeshua we see he died on the cross, when we look at him, we die to. We die because of the spirit that is given to us from what He had taught.
Now we see Jesus Christ was buried after dying, and what happened when God raised Him up from the dead? He was given new life, and that is the same thing with us. We are given new life from what you may ask? The spirit that resides in us.
So we see a transition of the state of man from the fleshly ways, to the new spiritual ways.
What does the spiritual ways produce in a persons life who is a believer in God, and Yeshua ?
The spiritual ways produce in a believers life, that of love, joy, peace, longsuffering, gentleness, goodness, faith, meekness, temperance, against which there is no law.
Therefore to answer you question of why do we need to be moral?
@Cis.jd
Well we have a choice we can either do wrong, or do right and from what I believe to do right is to have God working with-in a believer to show the light of God, rather than that of the darkness that can come from the world.
Which comes by and through on an individual level, of someone building their relationship with God, in faith, and in love.
Scriptures used (Galatians 5:19-25) (The Good News Hope of Yeshua Christ, the Spirit, and God the Father who is the giver of all things good)