The new heaven and earth described in Revelation has a city with no need of the light of either the sun or the moon:
And the city has no need of sun or moon to shine on it, for the glory of God gives it light, and its lamp is the Lamb. (Revelation 21:23 ESV)
καὶ ἡ πόλις οὐ χρείαν ἔχει τοῦ ἡλίου οὐδὲ τῆς σελήνης ἵνα φαίνωσιν αὐτῇ ἡ γὰρ δόξα τοῦ θεοῦ ἐφώτισεν αὐτήν καὶ ὁ λύχνος αὐτῆς τὸ ἀρνίον
A similar description of lamp and light is found in Psalm 119(118):
Your word is a lamp to my feet an a light to my paths. [LXX 118:105] (NET)
Λύχνος τοῖς ποσίν μου ὁ λόγος σου καὶ φῶς ταῖς τρίβοις μου.
Is lamp in Revelation 21:23 an allusion to Psalm 119 intended to show the lamb is the word? In effect saying the lamb which is the lamp is the word which is the lamp?