Adam Clarke on Philippians 1:9

This I pray - This is the substance of all my prayers for you, that your love to God, to one another, and to all mankind, may abound yet more and more, ετι μαλλον και μαλλον περισσευη, that it may be like a river, perpetually fed with rain and fresh streams so that it continues to swell and increase till it fills all its banks, and floods the adjacent plains.

In knowledge - Of God's nature, perfections, your own duty and interest, his work upon your souls, and his great designs in the Gospel.

And in all judgment - Και πασῃ αισθησει· In all spiritual or moral feeling; that you may at once have the clearest perception and the fullest enjoyment of those things which concern your salvation; that ye may not only know but feel that you are of God, by the Spirit which he has given you; and that your feeling may become more exercised in Divine things, so that it may he increasingly sensible and refined.