Now may our Lord Jesus Christ Himself and God our Father, who has loved us and given us eternal comfort and good hope by grace, comfort and strengthen your hearts in every good work and word. [2 Thessalonians 2:16-17 NASB]
Paul inserts a blessing for the Thessalonian church, and by extension, to the entire church of God. His blessing is also a prayer.
He starts by reminding what God has done for us in the past. He has loved us. He has given us eternal comfort. He has given us good hope.
The way I read this, Paul is not reminding God of what He has done in the past. That would be like a beggar sitting by the side of the road. Being compassionate, you check your wallet and give him five dollars. The next day, when you walk by, the same beggar stops you in the street, demanding more money. "You gave me five dollars yesterday, now give me at least as much today." That is simply rude. God gives His gifts freely and doesn't need to be reminded.
On the other hand, it is good for us to be reminded of what God has done. This is like two children debating whether to ask their father for ice cream money. The one child reminds the other, "He has always given us ice cream money whenever we ask for it. Surely, he will do so again."
We remind ourselves of God's past blessings to increase our faith in receiving His present and future blessings. He has given us comfort in the past, and He will continue to give us comfort.
Don't say to yourself, "I don't deserve God's blessings." You may be dealing with shame because you haven't lived up to the full measure of godliness. Or you may have genuine godly humility that says, "I am not worthy."
It is true that you are not worthy. It is true that you don't deserve God's blessings. But God has blessed you anyway. That's what grace is all about.
Paul's prayer and blessing for us is that in every good work we do, we will experience God's comfort and strength.
In an anti-Christian environment such as the Thessalonians were experiencing, it is easy to grow weary and discouraged. The path of least resistance is to stay home and stay silent. By contrast, in an easy environment, where Christianity is embraced and endorsed, history has shown us that it is easy to become sluggish and complacent. When the fervor of spiritual worship dies down, we succumb to the trappings of religious ritual.
In any case, we need God's comfort and strength in our hearts. As he says later in this letter;
But as for you, brethren, do not grow weary of doing good. [2 Thessalonians 3:13 NASB]
Jesus said;
“You are the light of the world. A city set on a hill cannot be hidden; nor does anyone light a lamp and put it under a basket, but on the lampstand, and it gives light to all who are in the house. “Let your light shine before men in such a way that they may see your good works, and glorify your Father who is in heaven. [Matthew 5:14-16 NASB]
Apply this blessing for yourself; that our Lord Jesus Christ Himself, and God the Father will bless you with comfort and strength in your heart in every good thing that you do and say.
Lord Jesus, I thank you for the comfort and hope that You have given me. I pray that You will continue to comfort and strengthen me in doing good.