Set forward for bring, A.V. Set forward ( πρόπεμψον); the technical expression both in the New Testament and the LXX., and also in classical Greek, for helping a person forward on their journey by supplying them with money food, letters of recommendation, escort, or whatever else they might require (see Acts 15:3; Acts 20:38; Acts 21:5; Romans 15:24; 1 Corinthians 16:6; 2 Corinthians 1:16; 3 John 1:6).
Zenas the lawyer. He is utterly unknown. His name is short for Zenodorus, but whether he was "a Jewish scribe or Roman legist" can hardly be decided. But his companionship with Apollos, and the frequent application of the term νομικός in the New Testament to the Jewish scribes and lawyers (Matthew 22:35; Luke 7:30; Luke 10:25; Luke 11:45, Luke 11:48, Luke 11:52; Luke 14:3), makes it most probable that he was a Jewish lawyer.
Apollos; the well-known and eminent Alexandrian Jew, who was instructed in the gospel by Aquila and Priscilla at Ephesus, and became a favorite teacher at Corinth (Acts 18:24; Acts 19:1; 1 Corinthians 1:12, and the following chapters, and 1 Corinthians 16:12).
It is a probable conjecture of Lewin's that Apollos was the bearer of this letter, written at Corinth, and was on his way to Alexandria, his native place, taking Crete on the way.