10 night and day praying exceedingly that we may see your face and perfect what is lacking in your faith?

Matthew Henry's Commentary on 1 Thessalonians 3:10

Commentary on 1 Thessalonians 3:6-10

(Read 1 Thessalonians 3:6-10)

Thankfulness to God is very imperfect in the present state; but one great end of the ministry of the word is to help faith forward. That which was the instrument to obtain faith, is also the means of increasing and confirming it, namely, the ordinances of God; and as faith cometh by hearing, so it is confirmed by hearing also.