alegrarse
From LSJ
ἐὰν ταῖς γλώσσαις τῶν ἀνθρώπων λαλῶ καὶ τῶν ἀγγέλων, ἀγάπην δὲ μὴ ἔχω, γέγονα χαλκὸς ἠχῶν ἢ κύμβαλον ἀλαλάζον → though I speak with the tongues of men and of angels and have not charity I am become as sounding brass or a tinkling cymbal
Spanish > Greek
ἀσπάζομαι, γανύσκομαι, γηθέω, γάνυμαι, βριάζομαι, ἐνευφραίνομαι, ἀφιλαρύνομαι, γανόω, ἐγκαυχάομαι, ἀγαθύνω, διαχέομαι, ἀγάλλω