And this is what God, who sent me, wants: That I should not lose any of those persons whom He has given me, but should raise them up [from the dead] on the last day [i.e., the judgment day].

and many of Martha and Mary's Jewish friends had come to comfort them over [the loss of] their brother.

The person who loves his [earthly] life will [eventually] lose it [forever], but the person who hates his life in this world will retain never ending life.

I protected them while I was with them by [the power of] your name which you gave me. [See verse 11]. I guarded them so that not one of them was lost except the "son of destruction" [i.e., Judas]. [This was] so that the Scripture would be fulfilled [Psa. 41:9 ?].

[He said this] so the words He had spoken [previously] would be fulfilled [See 17:12], "I did not lose any of those men you [i.e., God] gave me."