What is the significance of calling God 'my God' in a believer's life?

In the sermon, the phrase 'the Lord is my God' reflects an intimate and personal relationship that believers have with God. This is not merely a formal declaration but speaks to the covenant nature of their relationship. As Zechariah 13:9 states, God's people affirm their identity as His own. This covenantal aspect is significant as it assures believers of their place in God's family, highlighting the security and commitment that God has towards them. Furthermore, it fosters a sense of belonging and identity that shapes a believer's life in accordance with God's will, fostering a lifestyle of worship and service. This relationship is foundational for experiencing peace and assurance in one's faith.