en_tn/php/01/20.md

It is my confident expectation and certainty

Here the words "confident expectation" and "certainty" mean basically the same thing. Paul uses them together to emphasize how strong his expectation is. AT: "I am completely convinced" (See: rc://en/ta/man/translate/figs-doublet)

But with all courage, as always and especially right now

AT: "But I will have enough courage right now, as I have always had"

I will bring glory to Christ in my body

Paul uses the physical "body" to represent his life or the way he lives. AT: "so that I will honor Christ with all that I do" (See: rc://en/ta/man/translate/figs-metonymy)

whether by life or by death

AT: "if I go on living or if I die"

For to me to live is Christ, and to die is gain

AT: "Because if I go on living, I will live for Christ, and if I die, that is even better"