<p>1:6 <i>Being confident of this very thing, that He who began a good work in you will keep working at perfecting it, until the day of Jesus Christ</i>- &quot;Confident&quot; is a Greek word much beloved of Paul in Philippians (1:6,14,25; 2:25; 3:3,4). The word really means 'persuaded'. Writing from prison towards the end of his ministry, Paul could see how he had been persuaded of his positions throughout his walk with the Lord. He was persuaded that the good work begun within them would come to its intended term at the Lord's return. The work begun within believers refers to the sanctifying work of the Holy Spirit, the gift given to every believer, but which only becomes actualized in those who allow it to. Many like the Corinthians received that gift but were &quot;not spiritual&quot; (1 Cor. 3:1). The gift of the Spirit in our hearts is the earnest or guarantee / down payment on the salvation we shall finally receive at the Lord's return (2 Cor. 1:22; 5:5). The good work begun and now ongoing will come to its intended end at the Lord's return. It is God who works His works in us (Heb. 13:21), completing the work of faith in the power of the Spirit within us (2 Thess. 1:11). His dynamic power&nbsp; works within us to this end (Eph. 1:19; 3:7). Phil. 3:21 clearly refers to this idea: &quot;Who will transform our lowly body that it may be conformed to his glorious body, according to the working by which he is able even to subdue all things to himself&quot;. The power of transformation at the last day is that same power which is now at work within us. And that is the explicit teaching of Rom. 8:11: &quot;But if the Spirit of Him that raised up Jesus from the dead dwells in you, He that raised up Christ Jesus from the dead shall give life also to your mortal bodies- through His Spirit that dwells in you&quot;. Gal. 3:3 echoes the ideas here in Phil. 1:6 by speaking of how the Spirit has begun a work in us, which shall be also completed (s.w. &quot;perfecting&quot; Phil. 1:6) at the Lord's return. This is why in :7 Paul says he feels like this about the Philippians because they have all received the grace, the gift, of the Spirit as Paul has.</p>