Christ’s greatest rival for perfection of moral character is – not surprisingly – Gautama Buddha. Here is an excerpt from an early Buddhist text, the Dhammapada.
Christ would have loved Buddha, that is for sure
"One should give up anger,
renounce pride,
and overcome all fetters.
Suffering never befalls him
who clings not to mind and body
and is detached.
He who checks rising anger
as a charioteer checks a rolling chariot,
him I call a true charioteer.
Others only hold the reins.
Overcome the angry by non-anger;
overcome the wicked by goodness;
overcome the miser by generosity;
overcome the liar by truth.
Speak the truth;
yield not to anger;
when asked, give even if you only have a little.
By these three means
can one reach the presence of the gods.
Let a man guard himself
against irritability in bodily action;
let him be controlled in deed.
Abandoning bodily misconduct,
let him practice good conduct in deed.
Let a man guard himself
against irritability in speech;
let him be controlled in speech.
Abandoning verbal misconduct,
let him practice good conduct in speech.
Let a man guard himself
against irritability in thought;
let him be controlled in mind.
Abandoning mental misconduct,
let him practice good conduct in thought.
The wise are controlled in bodily action,
controlled in speech and controlled in thought.
They are truly well-controlled."
“For hatred does not cease by hatred at any time: hatred ceases by love, this is an eternal rule.”
“Do not speak harshly to anybody; those who are spoken to will answer thee in the same way. Angry speech is painful, blows for blows will touch thee.”
I do not know when the above – the Dhammapada–was written, but Buddha lived and taught half a millenium before Christ.