Colossians 4:2-6

Be earnest and unwearied and steadfast in your prayer [life], being [both] alert and intent in [your praying] with thanksgiving. And at the same time pray for us also, that God may open a door to us for the Word (the Gospel), to proclaim the mystery concerning Christ (the Messiah) on account of which I am in prison; That I may proclaim it fully and make it clear [speak boldly and unfold that mystery], as is my duty. Behave yourselves wisely [living prudently and with discretion] in your relations with those of the outside world (the non-Christians), making the very most of the time and seizing (buying up) the opportunity. Let your speech at all times be gracious (pleasant and winsome), seasoned [as it were] with salt, [so that you may never be at a loss] to know how you ought to answer anyone [who puts a question to you].