1 Thessalonians 3:10 "Night and day praying exceedingly that we may see your face and perfect what is lacking in your faith?"
There is no better way to encourage a fellowship than praying exceedingly for it.
This was Paul's fervent desire and it should be ours. Face to face contact is essential in imparting strength, knowledge and practical support. Genuine faith needs full truth of the Word to make growth complete.
1 Thessalonians 3:11 "Now may our God and Father Himself, and our Lord Jesus Christ, direct our way to you."
The Lord did direct Paul to them in His own way and time (Acts 20:1-3, 1 Timothy 1:3 ). And the Lord will arrange the fulfillment of our desire to bring spiritual help to others, no matter how, in the natural circumstances it does not seem possible.
1 Thessalonians 3:12 "And may the Lord make you increase and abound in love to one another."
We are to encourage the love to "abound," that is, to "multiply" so that it overflows to all men. The love of Paul and his companions was indeed overflowing to all and everyone. Nothing less than these kinds of fellowships are needed today.
1 Thessalonians 3:13 "So that He may establish your hearts blameless in holiness before our God and Father at the coming of our Lord Jesus Christ with all His saints."
Establishing in our hearts holiness unto the Lord, by grace, results in the issuing of daily living unto the Lord in all pleasing, under His all-seeing eye, and being presented blameless at His coming. What a day of rejoicing that will be.
1 Thessalonians 3:13 "At the coming of our Lord Jesus Christ with all His saints."
Our Lord is coming with all His saints. We are to live with this coming always filling us with expectancy. (Philippians 3:20,21, Titus 2:11-14 ). The culmination of expectant fellowship is eternal fellowship with the Lord. What glorious consummation! Jesus is coming.

Are you living in readiness for your Lord's return?