'Perfect' in the Bible

There it was—the true Light [the genuine, perfect, steadfast Light] which, coming into the world, enlightens everyone.

I have told you these things, so that in Me you may have [perfect] peace. In the world you have tribulation and distress and suffering, but be courageous [be confident, be undaunted, be filled with joy]; I have overcome the world.” [My conquest is accomplished, My victory abiding.]

But now I am coming to You; and I say these things [while I am still] in the world so that they may experience My joy made full and complete and perfect within them [filling their hearts with My delight].