Andrew of Caesarea
Verses 14b-15. Blessed are those who inherit eternal rest for temporary labors, and who, for sufferings with Christ, will reign together with Him and serve Him. The words day and night indicate the continuity of this service. There will be no night there, but eternal day, illumined not by a sensible sun, but by the spiritual Sun, the Sun of righteousness, Christ. Yet by night one may understand hidden and profound mysteries. Then by day one should understand what is clear and easily comprehended. The temple of God is every creature renewed by the Spirit. But most certainly it is those who have kept the pledge of the Spirit whole and unquenched. God promised to dwell and walk in them (2 Cor 6:16).