John Gill Commentary Acts 20:27

"For I shrank not from declaring unto you the whole counsel of God." — Acts 20:27 (ASV)

For I have not shunned to declare to you all the counsel
of God .
] By which is meant, not the purposes and decrees of God, latent in his own breast, these the apostle could not declare; but his revealed will in the Gospel, concerning the salvation of men by Jesus Christ, even the whole of the Gospel, every truth and doctrine of it, necessary to salvation, and to the peace, joy, and comfort of the saints; together with all the ordinances of it, and everything that had any tendency to promote the glory of God, and the good of souls; see (Luke 7:30) none of these things did the apostle withhold from the knowledge of the church at Ephesus, but freely imparted and communicated them to them; (See Gill on Acts 20:20).