What does the Bible say about coming to Christ for salvation?

Isaiah 55 emphasizes God's invitation to all who are thirsty to come to Him without price. The passage illustrates that spiritual thirst signifies a profound need for righteousness, which can only be fulfilled through Christ. This reflects the nature of salvation in historic Reformed theology, where one must ultimately rely on Christ's righteousness rather than their own works. The text states that God does not require anything of us to receive His grace; rather, He calls those who have nothing to bring to come freely and drink from the waters of salvation.