Which is as a bridegroom coming out of his chamber; literally, and he is as a bridegroom. The bridegroom went forth to meet the bride in glorious apparel, and "preceded by a blaze of torch-light" (Kay).
The sun's "chamber" is where he passes the night—below the earth; from this he bursts forth at morning in his full glory, scattering the darkness, and lighting up his splendid "tabernacle." And rejoiceth as a strong man-to run a race (comp.
5:31, "As the sun when he goeth forth in his might"). The Prayer-book Version, if less literal, better conveys the spirit of the original.