Philipper 1:9

The subject of his prayer for them (Phi 1:4). your love--to Christ, producing love not only to Paul, Christ's minister, as it did, but also to one another, which it did not altogether as much as it ought (Phi 2:2; Phi 4:2). knowledge--of doctrinal and practical truth. judgment--rather, "perception"; "perceptive sense." Spiritual perceptiveness: spiritual sight, spiritual hearing, spiritual feeling, spiritual taste. Christianity is a vigorous plant, not the hotbed growth of enthusiasm. "Knowledge" and "perception" guard love from being ill-judged.

These verses contain the prayers he put up for them. Paul often let his friends know what it was he begged of God for them, that they might know what to beg for themselves and be directed in their own prayers, and that they might be encouraged to hope they should receive from God the quickening, strengthening, everlasting, comforting grace, which so powerful an intercessor as Paul asked of God for them. It is an encouragement to us to know that we are prayed for by our friends, who, we have reason to think, have an interest at the throne of grace. It was intended likewise for their direction in their walk, and that they might labour to answer his prayers for them; for by this it would appear that God had answered them. Paul, in praying thus for them, expected good concerning them. It is an inducement to us to do our duty, that we may not disappoint the expectations of praying friends and ministers. He prayed, 1. That they might be a loving people, and that good affections might abound among them; That your love might abound yet more and more. He means it of their love to God, and one another, and all men. Love is the fulfilling both of the law and of the gospel. Observe, Those who abound much in any grace have still need to abound more and more, because there is still something wanting in it and we are imperfect in our best attainments. 2. That they might be a knowing and judicious people: that love might abound in knowledge and in all judgment. It is not a blind love that will recommend us to God, but a love grounded upon knowledge and judgment. We must love God because of his infinite excellence and loveliness, and love our brethren because of what we see of the image of God upon them. Strong passions, without knowledge and a settled judgment, will not make us complet…

1:9-10 Love is a fruit of Christ’s Spirit within believers (Rom 5:5; Gal 5:22). • growing in knowledge and understanding: In this way, believers can understand what really matters (see Rom 12:2) and live pure and blameless lives until the day of Christ’s return (cp. 1 Thes 3:12-13; 5:23).