"Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God".
"And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus".
There are a couple of footnotes I like to these verses: Verse 6 - 'Careful' - meaning 'don't be unduly concerned' (GR). I think it's easy to get caught up with things that in the long run don't really matter. Sometimes our priorities and perspective get confused, and we put the most effort into the things that matter the least- neglecting the 'weightier matters'(Matt 23:23).
Verse 7 - 'keep' - meaning 'guard' (GR). The blessing of peace is such a wonderful thing. When it is absent confusion and despair reign, when it is present faith carries you through your trials giving you hope and purpose. I like the use of the word 'guard' here - it makes me feel as if God is protecting us from unnecessary pain and anguish of heart, which I know He will as we come unto Christ more fully.