Believe!

John 1:12 NIV
Yet to all who did receive him, to those who believed in his name, he gave the right to become children of God—

All it takes to become God’s kingdom member is to believe in God’s saving grace through Jesus.
It is a simple act of believing in Jesus which guarantees our access to eternal life.

John 3:16 NIV
For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.

As simple as it is, many are not willing to believe and take the step of faith.