Another treasure: "For to me, to live is Christ and to die is gain" (1:21). Sounds nice and sweet, and is comforting when we are on the verge of death -- we're actually passing from death into life. But when you really think about what it means that "to live is Christ," we're signing up for a lot of suffering. That was the nature of Christ's life; glory didn't come until the ascension, which means that it was after a life of being ridiculed and misunderstood, abandoned by your friends, and brutally murdered for people who claimed your Father's name. THAT's what it means to "live Christ."
Philippians 2:12-13, "Continue to work out your salvation with fear and trembling, for it is God who works in you to will and act according to his good purpose." The perfect explanation of whether it is God who completes our salvation, or whether we do it. As Clair Davis would say, "Yes." We give it 100% of our effort, and God does 100% of the work. But remember, our confidence is that HE will complete what he began, ultimately.
Finally, the beautiful hymn of Phil 2:5-11. I've been thinking lately, some day I'd like to write a book about Paul's statement that Christ's power is perfected in our weakness. There are so many examples of this in Scripture, but this is the ultimate. He humbled himself, emptied himself, became a servant, obeyed to the death; therefore God exalted him and gave him the name that is above every name.
that at the name of Jesus every knee should bow,
in heaven and on earth and under the earth,
and every tongue confess that Jesus Christ is Lord,
to the glory of God the Father.