Charles H. Spurgeon on Psalms 20:4

"Fulfil all thy counsel." Answer thee, ad cardinem desiderii, as a father, Augustine, expresseth it; let it be unto thee even as thou wilt. Sometimes God doth not only grant a man's prayer, but fulfilleth his counsel; that is, in that very way, by that very means, which his judgment pitched upon in his thoughts. —John Trapp.

Verse 5 (first clause). Whosoever do partake with Christ's subjects in trouble, shall share with them also in the joy of their deliverance; therefore it is said, "We will rejoice in thy salvation." —David Dickson.