We are bound to always give thanks to God for you, brothers,{The word for "brothers" here and where context allows may also be correctly translated "brothers and sisters" or "siblings."} even as it is appropriate, because your faith grows exceedingly, and the love of each and every one of you towards one another abounds;
"As it is meet" signifies Paul’s thanksgiving is not just a personal feeling, but it is because they are worthy of honor and praise. In other words, Paul is saying, "Your growth in grace deserves such acknowledgment to God." To the believers at Philippi, Paul says, "Even as it is meet for me to think this of you all" (Philippians 1:7). His heart is not filled with pride in the wrong way but with spiritual pride and thanksgiving because of the faithfulness of the saints; it is right to send up praises and thanksgiving to God because of their steadfastness and growth in faith.