<p>21:17 <em>And when we arrived in Jerusalem</em>- Luke was a Gentile (so Col. 4:11 implies). Note how the other Gospel writers speak of the <em>sea</em> of Galilee, whereas the more widely travelled Luke refers to it only as a lake. While Paul was in prison in Caesarea for two years, Luke was a free man (Acts 21:17; 24:27). It seems that during that period, Luke may have&nbsp;spent the time travelling around the areas associated with Jesus, interviewing eye witnesses- especially Mary, the aged mother of Jesus, from whom he must have obtained much of the information about His birth and Mary&rsquo;s song. His preaching of the Gospel in Luke and Acts is made from his perspective- the fact that salvation is for all, not just Jews, is a major theme (Lk. 2:30-32; 3:6; 9:54,55; 10:25-34; Acts 1:8; 2:17).</p><p><em>The brothers received us gladly</em>- This appears in contrast with the spirit of :18. So perhaps the &quot;brothers&quot; in view were those in Mnason's home; see on :16.</p>