Why would God forbid the knowledge of good and evil to Adam and Eve? This seems strange as even the fruits from the Tree of Life were not forbidden to them. And when God forbid to eat these fruits, He explained what kind of tree it was. God wanted us to know that he hadn't meant the knowledge of good and evil for us. Why?
耶和华 神吩咐他说：“园中各样树上的果子，你可以随意吃， 只是分别善恶树上的果子，你不可吃，因为你吃的日子必定死！”( 创世记 2:16-17 )
Let’s see what happened to Adam and Eve on the very first meeting with God right after eating the forbidden fruit.
天起了凉风，耶和华 神在园中行走。那人和他妻子听见 神的声音，就藏在园里的树木中，躲避耶和华 神的面。 耶和华 神呼唤那人，对他说：“你在哪里？” 他说：“我在园中听见你的声音，我就害怕；因为我赤身露体，我便藏了。”( 创世记 3:8-10 )
The knowledge of Good and Evil made Adam and Eve hide from God. Hide from the one who created them, who loved and cared for them…
With this, we already see that the first response caused by the extra knowledge was not very promising. Adam and Eve, in the same way as we all, are simply not ready for such a powerful knowledge.
The knowledge of good and evil made us rely on our own judgement instead of following God. We do not see all that God sees, we do not comprehend all complexity and interconnectivity of things in this world. We lack God’s wisdom and understanding, yet we readily stamp the things we see with "Good" and "Bad"…
天怎样高过地，照样，我的道路高过你们的道路；我的意念高过你们的意念。( 以赛亚书 55:9 )
This stolen knowledge blinds us and keeps away from the message of God. When we hear "bad" news or critique against us, we will judge that bad person instead of trying to understand his message for us.
哪一个先知不是你们祖宗逼迫呢？他们也把预先传说那义者要来的人杀了；如今你们又把那义者卖了，杀了。( 使徒行传 7:52 )
King David was one of the rare exceptions who was actually listening to the word of God regardless of whether good or bad person it was coming from, and whatever form the speech took.
＜大卫和示每＞ 大卫王到了巴户琳，见有一个人出来，是扫罗族基拉的儿子，名叫示每。他一面走一面咒骂， 示每咒骂说：“你这流人血的坏人哪，去吧去吧！ 洗鲁雅的儿子亚比筛对王说：“这死狗岂可咒骂我主我王呢？求你容我过去，割下他的头来。” 王说：“洗鲁雅的儿子，我与你们有何关涉呢？他咒骂是因耶和华吩咐他说：‘你要咒骂大卫。’如此，谁敢说你为什么这样行呢？”( 撒母耳记下 16:5,7,9,10 )
Indeed, however loved by God David was, he was a murderer who later was not allowed to build a temple for God.
只是耶和华的话临到我说：‘你流了多人的血，打了多次大仗，你不可为我的名建造殿宇，因为你在我眼前使多人的血流在地上。( 历代志上 22:8 )
If we look further, we’ll understand that we also get what we deserve no matter good or bad person it comes from. Yes, it’s natural for us to blame our manager who did not give us a raise, another driver who hit us in a car accident, a thief who stole something valuable from us, another person we had conflict with… We always see the evil in someone else, and do not see the message meant for us behind what had happened…
为什么看见你弟兄眼中有刺，却不想自己眼中有梁木呢？( 马太福音 7:3 )
Yes, if bad person or bad circumstances approached, it's never without a reason.
现在要改正你们的行动作为，听从耶和华──你们 神的话，他就必后悔，不将所说的灾祸降与你们。( 耶利米书 26:13 )
So let’s withhold our judgement on those who we think is Evil, but shed the light of love on everyone, as a true children of our Heavenly Father.
这样就可以作你们天父的儿子；因为他叫日头照好人，也照歹人；降雨给义人，也给不义的人。( 马太福音 5:45 )
Now we see that every knowledge comes with great responsibility. While we got the knowledge of Good and Evil, we do not have full understanding to use it properly. Therefore, let’s withhold our judgement and rely on God in all we do.
你要专心仰赖耶和华，不可倚靠自己的聪明， 在你一切所行的事上都要认定他，他必指引你的路。( 箴言 3:5-6 )