Charles Ellicott Commentary Psalms 92:2

"To show forth thy lovingkindness in the morning, And thy faithfulness every night," — Psalms 92:2 (ASV)

Lovingkindness ... faithfulness. —The two most prominent features in the display of the covenant relation of God towards His people. The connection of lovingkindness or grace with the morning, and faithfulness or truth with the evening, is only a result of the Hebrew poetic style; and yet there is a fitness in the association. Love breaks through the clouds of doubt as the morning light rises on the night; and thoughts of God’s unerring and impartial justice best suit the evening—the trial time of the day.