Why do believers trust in Christ alone for salvation?

The essence of the gospel is that salvation is a gift that can only be attained through Jesus Christ. As highlighted in Galatians 2:16, 'a person is not justified by works of the law but through faith in Jesus Christ.' Believers recognize their inability to attain righteousness on their own and thus trust in Christ, who fulfills all that God requires. This faith is rooted in His completed work on the cross, where He bore sin and secured redemption for His people. Trusting in Christ alone shifts believers' dependency from their efforts to the finished work of the Savior.