Exodus 29:19-30
The ceremony took its course; naturally, the sons of Aaron had not been cleansed to do thereafter just what they wished. They were consecrated, set apart for the service of the LORD. In Israel, only the family of Aaron exercised the priesthood, while now all those who make up the people of God are called to this noble task. Believing friends, if in His great love God has saved you, it is that henceforth you may be entirely consecrated to Him. The blood on the right ear, on the thumb of the right hand and on the great toe of the right foot (v. 20) show that these parts of the body, which speak respectively of obedience, action and walk, were sanctified in order to be put at God’s disposal by the power of the Holy Spirit (the oil on the blood).
Notice that the expression translated by the word "consecrate" means literally "fill their hands" (see note Exodus 28:41). Moreover, far from seeing in it (as some do) an act by which we offer ourselves to the Lord (can we give Him that which already belongs to Him?), we understand, on the contrary, that our hands, or rather our hearts, need first to be filled by God, in order to be able to "wave" the offering (Christ) before Him (v. 24; 1 Chronicles 29:14).