How do we know God's call to come is genuine?

In Isaiah 55:1, God commands, 'Ho! Everyone that thirsteth, come ye to the waters.' This is not merely an offer; it is a divine command, emphasizing the immediacy and sincerity of His invitation. God delights in fulfilling His promises, and He guarantees that those who come to Him will find their needs met. This is echoed in the New Testament, particularly in Matthew 11:28 where Jesus invites those burdened with sin to come to Him for rest. The assurance here is that He genuinely desires to save and fill those who heed the call.