Albert Barnes Commentary Job 40:10

"Deck thyself now with excellency and dignity; And array thyself with honor and majesty." — Job 40:10 (ASV)

Deck yourself now with majesty and excellency - That is, such as God has. Put on everything which you can, which would indicate rank, wealth, power, and see whether it could all be compared with the majesty of God; Compare (Psalms 104:1), O Lord my God, thou art very great; thou art clothed with honor and majesty.