What does it mean to rest in Christ for our salvation?

To rest in Christ signifies a complete reliance on His finished work, acknowledging that our own efforts are insufficient. In Matthew 11:28, Jesus invites those who labor and are heavy laden to come to Him for rest. This rest consists in affirming that all required for salvation has been accomplished through Christ - our substitute. It frees believers from the burden of trying to earn their way to God, allowing them to rejoice in the assurance provided by His grace that we are accepted in the Beloved.