The shema was a call given by God to Israel. It was a call to hear, with the Hebrew significance of the word carrying the meaning to obey. The word also carries the significance of knowing. The people of God are to know God and out of knowing him ought to flow the desire to obey him; the obeying is rooted in knowing that God is a God of grace, love, and mercy. This is ultimately displayed in and through Jesus Christ, who reiterates the call of the shema.
Spiritual disciplines for knowing God include reading and study of scripture, scripture memory, lectio divina, and the examen, among others.