“Lift up your hands in the sanctuary, And bless the Lord.”

Behold, bless the Lord, All you servants of the Lord , Who by night stand in the house of the Lord ! Lift up your hands in the sanctuary, And bless the Lord. The Lord who made heaven and earth Bless you from Zion!  Psalm 134:1-3 - NKJV   

“And the Levites who went far from Me, when Israel went astray, who strayed away from Me after their idols, they shall bear their iniquity. Yet they shall be ministers in My sanctuary, as gatekeepers of the house and ministers of the house; they shall slay the burnt offering and the sacrifice for the people, and they shall stand before them to minister to them. “But the priests, the Levites, the sons of Zadok, who kept charge of My sanctuary when the children of Israel went astray from Me, they shall come near Me to minister to Me; and they shall stand before Me to offer to Me the fat and the blood,” says the Lord God. “They shall enter My sanctuary, and they shall come near My table to minister to Me, and they shall keep My charge. And it shall be, whenever they enter the gates of the inner court, that they shall put on linen garments; no wool shall come upon them while they minister within the gates of the inner court or within the house. They shall have linen turbans on their heads and linen trousers on their bodies; they shall not clothe themselves with anything that causes sweat. “And they shall teach My people the difference between the holy and the unholy, and cause them to discern between the unclean and the clean. In controversy they shall stand as judges, and judge it according to My judgments. They shall keep My laws and My statutes in all My appointed meetings, and they shall hallow My Sabbaths.
Ezekiel 44:10-11,15-19,23-24 - NKJV