Cosmas Indicopleustes

The salvation of God here signifies Christ; for thus also Symeon, when he took up Christ in his arms, prayed God to be allowed to depart from this life, since his eyes had seen the salvation of God, namely Christ himself for it had been revealed to him by the Spirit that he should not see death, until he had seen the Lord Christ

The Christian Topography, Book 8 ↗

Bede

And he had received a response from the Holy Spirit that he would not see death before he had seen the Lord's Christ; and he came in the Spirit into the temple. Observe the expressions of the Scriptures: he said to see death. How is it seen, and with what eyes, that thing which, upon coming, closes the very eyes so that they may see nothing? But to see death signifies to experience it. …

On the Gospel of Luke ↗

Bonaventure

And he had received an answer. Here secondly he is commended by the Spirit of truth as leading him to wait upon a divine response; with respect to which it says: And he had received an answer from the Holy Spirit, namely through revelation: Isaiah 30: "At the voice of your cry, as soon as he shall hear, he will answer you." He had received a consolatory answer, according to Zechariah 1: "The Lord answered the Angel who spoke in me good words, words of consolation." And therefore it is added: That he should not see death before he had …

Commentary on Luke, Chapter 2 ↗