Colossians 4:1-9 (ESV)
4:1 Masters, treat your slaves  justly and fairly, knowing that you also have a Master in heaven.
2 Continue steadfastly in prayer, being watchful in it with thanksgiving. 3 At the same time, pray also for us, that God may open to us a door for the word, to declare the mystery of Christ, on account of which I am in prison— 4 that I may make it clear, which is how I ought to speak.
5 Walk in wisdom toward outsiders, making the best use of the time. 6 Let your speech always be gracious, seasoned with salt, so that you may know how you ought to answer each person.
7 Tychicus will tell you all about my activities. He is a beloved brother and faithful minister and fellow servant  in the Lord. 8 I have sent him to you for this very purpose, that you may know how we are and that he may encourage your hearts, 9 and with him Onesimus, our faithful and beloved brother, who is one of you. They will tell you of everything that has taken place here.