To χάρις ὑμῖν οὕτω τίθησιν κτλ. → Thus he writes joy to you all, etc. (Cramer's Catena on 1 Thessalonians 1.1)
life: P. and V. ψυχή, ἡ.
eagerness: P. and V. σπουδή, ἡ, προθυμία, ἡ.
cheerfulness: P. and V. εὐθυμία, ἡ (Xen.).