Atos 15

And the contention was so sharp between them, that they departed asunder one from the other: and so Barnabas took Mark, and sailed unto Cyprus;
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A separação de paulo e barnabé por causa de joão marcos revela conflitos pessoais na liderança. Marcos havia abandonado uma viagem anterior (at13:13), mas depois é reconciliado (cl4:10, 2tm4:11).
And Paul chose Silas, and departed, being recommended by the brethren unto the grace of God.