A Fixed Heart in an Uncertain World - Psalm 57:7 The sermon centers on the steadfastness found in Psalm 57:7, emphasizing that a fixed heart, rooted in faith and unwavering trust in God, provides stability amidst life's uncertainties. Drawing parallels to David's experience of persecution, the message highlights the importance of anchoring one's convictions in Scripture, resisting worldly influences, and expressing faith through consistent worship and testimony. Ultimately, a fixed heart, cultivated through grace and a commitment to God's truth, brings peace, strengthens the church, and reflects a life devoted to glorifying the Savior.