RKJNT(i)
7 Therefore, as you excel in everything, in faith, and utterance, and knowledge, and in all earnestness, and in your love for us, see that you excel in this gracious work as well.
8 I do not speak this as a commandment, but to use the zeal of others to test the sincerity of your own love.
9 For you know the grace of our Lord Jesus Christ, that, though he was rich, yet for your sakes he became poor, that through his poverty you might become rich.