[Not in your own strength] for it is God Who is all the while [a]effectually at work in you [energizing and creating in you the power and desire], both to will and to work for His good pleasure and satisfaction and delight.
Do all things without grumbling and fault-finding and complaining [against God] and questioning and doubting [among yourselves],
That you may show yourselves to be blameless and guileless, innocent and uncontaminated, children of God without blemish (faultless, undebatable) in the midst of a crooked and wicked generation [spiritually perverted and perverse], among whom you are seen as bright lights (stars or beacons shining out clearly) in the [dark] world,
Holding out [to it] and offering [to all men] the Word of Life, so that in the day of Christ I may have something of which exultantly to rejoice and glory in that I did not run my race in vain or spend my labor to no purpose.
Even if [my lifeblood] must be poured out as a libation on the sacrificial offering of your faith [to God], still I am glad [to do it] and congratulate you all on [your share in] it.
Amplified Bible (AMP)