Two accounts of the same event, one from Luke in Acts and the other from Paul in Galatians, detail an important event in the early Church.  Luke's accounts stresses the growth and generosity of the Gentile believers in Antioch as they send Barnabas and Saul to Jerusalem with a gift to help during a prophesied famine.  Paul's account demonstrates that the Apostles had accepted the new paradigm of believers no longer needing to be circumcised.  Also, it provides an insight into the chronology of this period.  

[Act 11:27-30 NASB] 27 Now at this time some prophets came down from Jerusalem to Antioch. 28 One of them named Agabus stood up and [began] to indicate by the Spirit that there would certainly be a great famine all over the world. And this took place in the [reign] of Claudius. 29 And in the proportion that any of the disciples had means, each of them determined to send [a contribution] for the relief of the brethren living in Judea. 30 And this they did, sending it in charge of Barnabas and Saul to the elders.

[Gal 2:1-10 NASB] 1 Then after an interval of fourteen years I went up again to Jerusalem with Barnabas, taking Titus along also. 2 It was because of a revelation that I went up; and I submitted to them the gospel which I preach among the Gentiles, but [I did so] in private to those who were of reputation, for fear that I might be running, or had run, in vain. 3 But not even Titus, who was with me, though he was a Greek, was compelled to be circumcised. 4 But [it was] because of the false brethren secretly brought in, who had sneaked in to spy out our liberty which we have in Christ Jesus, in order to bring us into bondage. 5 But we did not yield in subjection to them for even an hour, so that the truth of the gospel would remain with you. 6 But from those who were of high reputation (what they were makes no difference to me; God shows no partiality)--well, those who were of reputation contributed nothing to me. 7 But on the contrary, seeing that I had been entrusted with the gospel to the uncircumcised, just as Peter [had been] to the circumcised 8 (for He who effectually worked for Peter in [his] apostleship to the circumcised effectually worked for me also to the Gentiles), 9 and recognizing the grace that had been given to me, James and Cephas and John, who were reputed to be pillars, gave to me and Barnabas the right hand of fellowship, so that we [might] [go] to the Gentiles and they to the circumcised. 10 [They] only [asked] us to remember the poor--the very thing I also was eager to do.