Those that be planted in the house of the Lord - As if plants were reared up in the house of God. The same image, under the idea of the olive tree, occurs in Psalms 52:8. See the notes at that verse. The passage here may refer particularly to those who have been trained up in connection with the church; young plants set out in the sanctuary, and cultivated until they have reached their growth.
Shall flourish in the courts of our God - That is, Having been planted there, they will grow there; they will send out their boughs there; they will produce fruit there. The “courts” of the house of God were properly the areas or open spaces around the tabernacle or the temple (see the notes at Matthew 21:12); but the word came also to denote the tabernacle or the temple itself, or to designate a place where God was worshipped. It has this meaning here. The passage affords an encouragement to parents to train up their children in attendance on the ordinances of public worship; and it shows the advantage of having been born in the church, and of having been trained up in it - an advantage which no one can fully appreciate. The passage may also be regarded as furnishing a proof of what will be the result of being thus “planted” and nurtured in connection with the church, inasmuch as trees carefully planted and cultivated are expected to produce more and better fruit than those which grow wild.