Albert Barnes Commentary 1 Thessalonians 4:10

"for indeed ye do it toward all the brethren that are in all Macedonia. But we exhort you, brethren, that ye abound more and more;" — 1 Thessalonians 4:10 (ASV)

And indeed you do it. (See Barnes on 1 Thessalonians 1:7.)

But we beseech you, brethren, that you increase more and more. (See Barnes on 1 Thessalonians 3:12.)

Here, as elsewhere, the apostle makes the fact that they deserved commendation for what they had done, a stimulant to arouse them to still higher attainments. Bloomfield.