Ps.123:1-2 "1 Unto thee lift I up mine eyes,
O thou that dwellest in the heavens.
2 Behold, as the eyes of servants look unto the hand of their masters,
and as the eyes of a maiden unto the hand of her mistress;
so our eyes wait upon the Lord our God,
until that he have mercy upon us."
Ps. 88:9 "...Lord, I have called daily upon thee,
I have stretched out my hands unto thee."
Job.11:13 "...prepare thine heart, and stretch out thine hands toward him"
Ps.143:6 "I stretch forth my hands unto thee: my soul thirsteth after thee, as a thirsty land. Selah."
Ps.134:1-2 "1 Behold, bless ye the Lord, all ye servants of the Lord,
which by night stand in the house of the Lord.
2 Lift up your hands in the sanctuary,
and bless the Lord."
Lam.2:19 "Arise, cry out in the night: in the beginning of the watches pour out thine heart like water before the face of the Lord: lift up thy hands toward him for the life of thy young children...."
Neh.8:6, "and Ezra blessed the Lord, the great God. And all the people answered, Amen, Amen, with lifting up their hands: and they bowed their heads, and worshipped the Lord with their faces to the ground."
Lk.21:28 "...look up, and lift up your heads; for your redemption draweth nigh."
Job.22:26 "For then shalt thou have thy delight in the Almighty, and shalt lift up thy face unto God."
Ezr.9:6 "...O my God, I am ashamed and blush to lift up my face to thee, my God."
Confession of sin and a downcast countenance are suited to each other.
At the close of worship, I might encourage the congregation to lift up their eyes or faces to God who has lifted their heads, and receive his benediction. If the people extended their hands as it were to receive the bounty of their God, I would not rebuke them. There is that posture or pose that is fitting for receivers, but there is no command for any.