Verse 19. My little children. The language of tender affection, such as a parent would use towards his own offspring. See Barnes "1 Co 4:15".

Comp. Mt 18:3; Joh 13:33; 1 Jo 2:1,12,13; 1 Jo 4:4; 5:21. The idea here is, that Paul felt that he sustained towards them the relation of a father, and he had for them the deep and tender feelings of a parent.

Of whom I travail in birth again. For whose welfare I am deeply anxious; and for whom I endure deep anguish. Comp.1 Co 4:15. His anxiety for them he compares to the deepest sufferings which human nature endures; and his language here is a striking illustration of what ministers of the gospel should feel, and do sometimes feel, in regard to their people.

Until Christ be formed in you. The name Christ is often used to denote his religion, or the principles of his gospel. See Barnes "Ro 13:14".

Here it means, until Christ reigns wholly in your hearts; till you wholly and entirely embrace his doctrines; and till you become wholly imbued with his Spirit. See Col 1:27.

{b} "My little children" 1 Co 4:15