How do we know that salvation is offered freely?

The invitation to 'take of the water of life freely' in Revelation 22:17 confirms that salvation is not earned but graciously given. This is in line with the doctrine of grace, where God extends His mercy to those who recognize their need for Him. Throughout Scripture, such as in John 7:37, Jesus invites the thirsty to come to Him, reinforcing that salvation is inclusive and available to all who respond. This free offer indicates that regardless of one's past or current state, God's grace remains accessible, thereby emphasizing His love and willingness to save all who believe.