1 Tesalonika 2:19

2:19 For who is our hope or joy or crown to boast of ¹  before our Lord Jesus at his coming? Is it not of course you?

1 Tesalonika 3:13

3:13 so that your hearts are strengthened in holiness to be blameless before our God and Father at the coming of our Lord Jesus with all his saints. ² 

[2:19]  ¹ sn Crown to boast of (Grk “crown of boasting”). Paul uses boasting or exultation to describe the Christian’s delight in being commended for faithful service by the Lord at his return (1 Cor 9:15-16; 2 Cor 1:12-14; 10:13-18; Phil 2:16; and 1 Cor 3:14; 4:5).

[3:13]  ² tc ‡ Important and early witnesses (א* A D* 81 629 lat) have ἀμήν (amhn, “amen”) at the end of this benediction, while the majority of mss, including several excellent witnesses (א² B D² F G Ψ 0278 1739 1881 Ï it sy sa), lack the particle. A decision is difficult, but in light of Paul’s habit of adding the ἀμήν to his notes of praise, even in the middle of his letters (cf. Rom 9:5; 11:36; 15:33; Gal 1:5), one might expect scribes to emulate this practice. Although a decision is difficult, it is probably best to follow the shorter reading. NA²⁷ has the particle in brackets, indicating some doubts as to its authenticity.