We should always be hospitable to and support fellow Christians, especially those who have served as missionaries and traveling evangelists.  The Bible tells us that we should aspire to become fellow workers for the Kingdom of God.

. . . because they went forth for His name’s sake, taking nothing from the Gentiles. ⁸ We therefore ought to receive such, that we may become fellow workers for the truth.  (3 Joh 1:7-8 NKJV)  We should receive fellow Christians and missionaries into our homes as a way of supporting them.  The Word says that by doing this, we may become fellow workers.

Here is the same verse in the New International Version:

It was for the sake of the Name that they went out, receiving no help from the pagans. ⁸ We ought therefore to show hospitality to such people so that we may work together for the truth.  (3 Joh 1:7-8 NIV)

Yes, I ask you also, true companion, help these women, who have labored side by side with me in the gospel together with Clement and the rest of my fellow workers, whose names are in the book of life.  (Phil 4:3 NIV)  This verse is appealing to a Philippian friend to help and support the women who labored in furthering the gospel of Jesus Christ.  Hospitality is one way of doing this.  Another way was to befriend these women and stay in relationship with them. 

As for Titus, he is my partner and fellow worker for your benefit. And as for our brothers, they are messengers of the churches, the glory of Christ.  (2 Cor 8:23 NIV) 

All of these Scriptures remind us to be hospitable and supportive of all those who preach the Word and share the Good News of Jesus with the unsaved.  When we obey these verses, we reap blessings upon ourselves and our families.  Pray for, encourage, and help those who are missionaries and evangelists.  God will reward you and credit you as co-laborers with them.  Now that is good to hear!