The LORD is my shepherd; I shall not want.- Psalm 23:1 (KJV)
We come to know that the Lord is our shepherd based upon how He cares for us. He watches over us as His flock. He protects us as his dear sheep.
His prophets compared His people to sheep (Isaiah 40:11, 53:6). His palmists spoke of the people as being like sheep (Psalm 78:52-54). Nathan’s parable to David was about a man and his sheep and dealt with David’s sin (2 Samuel 11-12; Psalm 51). David himself was chosen from the sheepfold to lead God’s people in Psalm 78.
God reveals the shepherd. God reigns as the Shepherd.
Read Psalms 22, 23, 24, 78