What did Jesus mean by saying 'to you it has been given to know the mystery of the kingdom'?

When Jesus declares in Mark 4:11 that 'to you it has been given to know the mystery of the kingdom of God,' He signifies a special revelation granted to His disciples. This reflects the sovereign grace of God, where revelation is not distributed universally, but selectively, illuminating those whom God has chosen. It suggests that the knowledge of divine truths requires divine initiative; not only does it necessitate the Spirit's work in the heart, but it reveals the exclusivity of Christ’s followers who are entrusted with powerful truths about the kingdom. This understanding is rooted in the grace of God, emphasizing the necessity of being in a covenant relationship with Christ to grasp the fullness of His message and the workings of salvation.