Lift up your hands in holiness and to the sanctuary and bless the Lord [affectionately and gratefully praise Him]! Psalm 134:2 (AMPC)
Hands represent ability, resourcefulness, creativity, possessions, power, and skill. Whatever we do with our hands we are focusing and yielding all we are, all we have, all we can do – our abilities, resourcefulness, creativity, power, and skill there.So, when we raise our hands in praise to the Lord, we are honoring and glorifying Him with the very things that He Himself endowed us with. We are acknowledging that all we are and have and can do comes from Him and is for His honor and glory.When we yield ourselves and all we have to the Lord in praise there’s a multiplication and increase never experienced any other way. Let the peoples praise You, O God; Let all the peoples praise You. Then the earth shall yield her increase…Psalm 67:5-6 (NKJV)