Hath not the potter power over the clay, of the same lump to make one vessel unto honour, and another unto dishonour?–Romans 9:21
As a potter has the authority and power over clay to make of it whatever he wants, so does God have authority and power over every individual to make of him whatever He wills; and this truth is foundational to an understanding of God and a proper respect for Him. To a rebel, this seems unfair and his enmity toward God is aggravated. But to those who trust God, it is a blessed truth, for they have God's word on it that they shall be "vessels of honor." While "it doeth not yet appear what we shall be," we can be certain that the Potter who molds us is is capable of great works. Thanks be to God, we are HIS workmanship.